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"alimentary canal" Definitions
  1. the passage in the body that carries food from the mouth to the anus

124 Sentences With "alimentary canal"

How to use alimentary canal in a sentence? Find typical usage patterns (collocations)/phrases/context for "alimentary canal" and check conjugation/comparative form for "alimentary canal". Mastering all the usages of "alimentary canal" from sentence examples published by news publications.

This is the politics of the moment in India, with directives for both ends of our alimentary canal.
But, then again, we are all mammals and ultimately, it is our common alimentary canal that will knit us back together.
As a consequence, such people are more than three times as likely as others are to develop serious alimentary-canal disorders at some point in their lives.
We know this because her name is Irritabelle, her bodysuit is illustrated with a digestive tract, and she offers up what amounts to a travelogue of the alimentary canal.
When Dr. Zhang Louzhen reviewed the images, he saw more than one hundred "granular shadows" in her abdomen, scattered from her stomach to… well, let's just call it the far end of her alimentary canal.
Admittedly, it's hard to tell if the sudden weight loss was because I was too fucked up to eat and move or because of the the prodigious expulsions from either end of my alimentary canal.
"Health food" as a path to dietary salvation has long flourished in America, going back to John Harvey Kellogg's legendary sanitarium in Battle Creek, where Americans paid to have yogurt administered to both ends of their alimentary canal.
Once it arrives in the stomach, the gelatine is rapidly digested and the star unfolds into something large enough to avoid being expelled into the intestine, but insubstantial enough not to obstruct the passage of semi-digested food through the alimentary canal.
If you have enterohemorrhagic E. coli (that's E. coli that can cause diarrhea or coliti) or Campylobacter (a type of bacteria that causes food poisoning) in your gut, adding some more at the top end doesn't noticeably change things in the alimentary canal.
Yang and her colleagues noticed that, toward the final 8 percent of a turd's long journey through the digestive tract (it takes up to 2.5 weeks for consumed food to make its way down the wombat's alimentary canal), the consistency of the poop changed from liquid to solid.
Most of the resulting batteries had modest voltages (between 0.5 and 0.7 volts) but stored enough energy to power one-shot ingestible devices such as capsule endoscopes (pill-shaped machines which can look at parts of the alimentary canal that conventional endoscopy cannot reach) or drug-delivery systems designed to release their payloads at a particular place in the gut.
The insect's digestive system is a closed system, with one long enclosed coiled tube called the alimentary canal which runs lengthwise through the body. The alimentary canal only allows food to enter the mouth, and then gets processed as it travels toward the anus. The alimentary canal has specific sections for grinding and food storage, enzyme production, and nutrient absorption. Sphincters control the food and fluid movement between three regions.
The gut of the earthworm is a straight tube which extends from the worm's mouth to its anus. It is differentiated into an alimentary canal and associated glands which are embedded in the wall of the alimentary canal itself. The alimentary canal consists of a mouth, buccal cavity (generally running through the first one or two segments of the earthworm), pharynx (running generally about four segments in length), oesophagus, crop, gizzard (usually) and intestine. Food enters at the mouth.
The alimentary canal directs food unidirectionally from the mouth to the anus. It has three sections, each of which performs a different process of digestion. In addition to the alimentary canal, insects also have paired salivary glands and salivary reservoirs. These structures usually reside in the thorax, adjacent to the foregut.
Ingestion of cocktail sticks, or fragments of them, has been known to cause injuries in several parts of the alimentary canal.
In addition to the alimentary canal, insects also have paired salivary glands and salivary reservoirs. These structures usually reside in the thorax, adjacent to the foregut.
Dendrorhynchus is a gregarine genus with total 2 species. The genus was first described in 1920 by David Keilin from the alimentary canal of dolichopodid larvae Systenus.
The main structure of an insect's digestive system is a long enclosed tube called the alimentary canal (or gut), which runs lengthwise through the body. The alimentary canal directs food in one direction: from the mouth to the anus. The gut is where almost all of insects' digestion takes place. It can be divided into three sections - the foregut, midgut and hindgut - each of which performs a different process of digestion.
A persistent thyroglossal duct in a rabbit showed resemblance to the layout of the alimentary canal; with its external fibrous connective tissue, muscular layers, submucosal glands, and convoluted epithelium.
The oncomiracidium has 4 pairs of lateral hooks. its alimentary canal consists only of a mouth, pharynx, and a simple sacculate intestine. The oncomiracidium develops into a post- oncomiracidial larvae, bilaterally symmetrical, that loses the eyes and 4 pairs of lateral hooks and develops 2 pairs of small hooks. The alimentary canal of this larvae is provided with two buccal suckers, an intestine differentiated into an oesophagus that bifurcates into two branches.
This species was described in 1908 by Porter.Porter (1908) A new Schizogregarine, Merogregarina amaroucii nov.gen., nov. sp., parasitic in the alimentary canal of the composite Ascidian, Amaroucium sp. (Prel. Comm.).
Williams was influenced by the research of Sir William Arbuthnot Lane. He attributed most diseases including cancer to autointoxication (defective operation of the alimentary canal) and slow poisoning from constipation.Late Dr Leonard Williams.
Melton, J. Gordon. (2007). The Encyclopedia of Religious Phenomena. Visible Ink Press. p. 12. According to Joseph McCabe before the séance he had hidden the birds in the "unpleasant end of his alimentary canal".
The larvae called onchospheres are ingested by ants, and enters the alimentary canal, from where they migrate into the abdominal cavity of the insect and develop into mature cysticercoids, the infective larvae to birds.
In most, the antennae have a retractable membrane at the base (not in Parallocorynus and Rhopalotria), and the alimentary canal has caeca distributed all over at random (in two clean bundles in Aglycyderini and Metrioxenini).
The same year, she received a Special Citation in scientific inquiry from Maximum Fun. Her book Gulp: Adventures on the Alimentary Canal (Oneworld) was on the shortlist for the 2014 Royal Society Winton Prize for Science Books.
Schmidt, Justin O. "Venom and the Good Life in Tarantula Hawks (Hymenoptera: Pompilidae): How to Eat, Not Be Eaten, and Live Long." Journal of the Kansas Entomological Society 77.4 (2004): 402-13. Web. Completion takes several hours, and at the end of it, the grub evacuates its alimentary canal; this meconium, or first stool, becomes a hardened mass at the end of the cocoon. The grub is much smaller than it was at the end of feeding because it has expended so much body content on spinning the cocoon and voiding its alimentary canal.
On 1 November, Mrs. Vinton was attacked with an acute form of inflammation of the alimentary canal. On 6 December, Mr. and Mrs. Luther arrived and gave her some strength for a while, but she died peacefully on 18 December 1864.
Insects may have one to hundreds of Malpighian tubules (element 20). These tubules remove nitrogenous wastes from the hemolymph of the insect and regulate osmotic balance. Wastes and solutes are emptied directly into the alimentary canal, at the junction between the midgut and hindgut.
It has an apical plate, which is a thickened region provided by a tuft of cilia and a pair of eye spots. The larva has a complete alimentary canal. The ciliary band stretches throughout the anterior and posterior region, and also the postoral region.
Acanthocephalans lack a mouth or alimentary canal. This is a feature they share with the cestoda (tapeworms), although the two groups are not closely related. Adult stages live in the intestines of their host and uptake nutrients which have been digested by the host, directly, through their body surface.
The other possible, but probably unlikely, affinity is with the hyolith molluscs. Its name is from the Latin rhytium, drinking horn. C. elongatum has been described to contain an alimentary canal in a single Chinese specimen. C. major was originally described as a member of the hyolith genus Orthotheca.
Body cavity searches may also be conducted at some international border crossings such as the U.S. Customs and Border Protection when they suspect international travelers of hiding contraband—such as drugs—in their alimentary canal (digestional tract).See United States v. Montoya de Hernandez, 473 U.S. 531, 538 (1985).
The hindgut (or epigaster) is the posterior (caudal) part of the alimentary canal. In mammals, it includes the distal third of the transverse colon and the splenic flexure, the descending colon, sigmoid colon and rectum. In zoology, the term hindgut refers also to the cecum and ascending colon.
In birds, the gravid proglottids containing a large number of egg capsules are passed out to the exterior with the feces. The eggs grow on soil into larvae called onchospheres, which are ingested by ants, and enters the alimentary canal, from where they migrates into the abdominal cavity of the host.
Deposited mistletoe seed. Sticky, to facilitate propagation in the host tree. The mistletoebird has a small muscularized stomach and short alimentary canal, where the amount of mechanical grinding and chemical digestion is minimized. This enables a clear passage and quick exit of the mistletoe fruit seeds through the mistletoebird's digestive system.
This route includes medications that are either swallowed, absorbed through the mucosa of the oral cavity, or inserted rectally. The parenteral route involves the administration of sedative drugs other than absorption across enteric membranes (outside of the alimentary canal). These methods include intravenous, inhalation, intramuscular, and submucosal administration, among others.
It feeds on crustaceans (especially prawn and shrimp), small fish and insect larvae.Berra, T.B.; and Wedd, D. (2001). Alimentary canal anatomy and diet of the nurseryfish, Kurtus gulliveri (Perciformes: Kurtidae) from the Northern Territory of Australia. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 17: 21-25.
The reticulum is the second chamber in the alimentary canal of a ruminant animal. Anatomically it is considered the smaller portion of the reticulorumen along with the rumen. Together these two compartments make up 84% of the volume of the total stomach. The rumen is located at the base of the esophagus.
Streptococcus equinus is a Gram-positive, nonhemolytic, nonpathogenic, lactic acid bacterium of the genus Streptococcus. It is the principal Streptococcus found in the alimentary canal of a horse, and makes up the majority of the bacterial flora in horse feces. S. equinus is seldom found in humans. Equivalence with Streptococcus bovis has been contested.
The lung/swim bladder originated as an outgrowth of the gut, forming a gas-filled bladder above the digestive system. In its primitive form, the air bladder was open to the alimentary canal, a condition called physostome and still found in many fish. The primary function is not entirely certain. One consideration is buoyancy.
Most adult digeneans occur in the vertebrate alimentary canal or its associated organs, where they most often graze on contents of the lumen (e.g., food ingested by the host, bile, mucus), but they may also feed across the mucosal wall (e.g., submucosa, host blood). The blood flukes, such as schistosomes, spirorchiids and sanguinicolids, feed exclusively on blood.
Eggs are laid on leaves close to water, but not above water. Female frog may guard its egg clutch usually consisting of 12–17 eggs. The tadpole falls to the ground and develops on land. It has "semi-direct development": the tadpole relies on its yolk and does not eat; it lacks a fully developed alimentary canal.
Oscillibacter valericigenes is a species of mesophilic bacterium identified in the alimentary canal of Japanese Corbicula clams. It is Gram-negative and anaerobic, with a straight to slightly curved rod-like morphology, and is motile with petritrichous flagella (i.e., flagella with diverse orientations from the cell body). It was not observed in culture to form spores.
The midgut is the portion of the embryo from which most of the intestines develop. After it bends around the superior mesenteric artery, it is called the "midgut loop". It comprises the portion of the alimentary canal from the end of the foregut at the opening of the bile duct to the hindgut, about two- thirds of the way through the transverse colon.
The alimentary canal is incomplete, consisting of a pair of lateral pouches arising from the oral sucker and a pharyngeal tube, which bifurcates into two gut caeca. The bladder is in the middle behind the ventral sucker. The genus is hermaphrodite, as both male and female reproductive system are present. It is a large fluke, vase-shaped, and bright-pink in colour.
The reticulorumen represents the first chamber in the alimentary canal of ruminant animals. It is composed of the rumen and reticulum. The reticulum differs from the rumen with regard to the texture of its lining. The rumen wall is covered in small, finger-like projections called papillae, whereas the reticulum is lined with ridges that form a hexagonal honeycomb pattern.
Malpighian tubules of a dissected cockroach, indicated by yellow arrow. Scale bar, 2 mm. Malpighian tubules are slender tubes normally found in the posterior regions of arthropod alimentary canals. Each tubule consists of a single layer of cells that is closed off at the distal end with the proximal end joining the alimentary canal at the junction between the midgut and hindgut.
The rumen, also known as a paunch, forms the larger part of the reticulorumen, which is the first chamber in the alimentary canal of ruminant animals. It serves as the primary site for microbial fermentation of ingested feed. The smaller part of the reticulorumen is the reticulum, which is fully continuous with the rumen, but differs from it with regard to the texture of its lining.
A male budgerigar with a full crop after feeding. One greater flamingo-chick in Zoo Basel is fed on crop milk. The crop (serial 4) prominently seen at the beginning of the alimentary canal. A crop (sometimes also called a croup or a craw, or ingluvies) is a thin-walled expanded portion of the alimentary tract used for the storage of food prior to digestion.
These different digestive regions have varying pH to support specific enzymatic activities and microbial populations. The anterior portion of the midgut and hindgut is slightly acidic (with a pH of approximately 6.0) while the posterior midgut portion is slightly alkaline (with a pH of approximately 8.0). Between the midgut and hindgut is an alimentary canal called the pyloric region, which is a muscular sphincter.
Modes of propagation of plants however vary, all in the aim of ensuring succession. Vervet monkeys, insects and some bird species have participated actively in succession within the ecosystem. They feed on fruits of the ficus trees, whose seeds must travel through an alimentary canal to completely break dormancy. If this step take place, the seeds have to be boiled to achieve the same effect.
The alimentary canal basically comprises a short narrow pharynx, a widened expansion, the crop and a poorly developed gizzard. After there is a midgut, that varies in dimensions between species, with a large amount of cecum, with a hingut, with varying lengths. There are typically four to six Malpighian tubules. The nervous system in beetles contains all the types found in insects, varying between different species.
The low-fibered food, after minimal fermentation and shredding, passes rapidly through the alimentary canal. The deer require a large amount of minerals such as calcium and phosphate in order to support antler growth, and this further necessitates a nutrient-rich diet. There are, however, some reports of deer engaging in carnivorous activity, such as eating dead alewives along lakeshores or depredating the nests of northern bobwhites.
Alimentary canal of the bird exposed Many birds possess a muscular pouch along the esophagus called a crop. The crop functions to both soften food and regulate its flow through the system by storing it temporarily. The size and shape of the crop is quite variable among the birds. Members of the family Columbidae, such as pigeons, produce a nutritious crop milk which is fed to their young by regurgitation.
There are short spines at the posterior tip. The authors describe an alimentary canal with terminal openings and a rectum with what might be dilator muscles. Based on a comparison of the incomplete/damaged holotype with the incomplete/damaged holotype of Pomatrum ventralis, researchers Aldridge, et al., proposed that X. stephanus was a junior synonym of P. ventralis because the anterior portions of the two species are largely identical.
With moderate sedation the patient is even more relaxed, and will respond to purposeful stimulation. In deep sedation, the patient may not exhibit any signs of consciousness and therefore be unresponsive to stimulation. Sedation by pharmacologic methods may be obtained by two general routes. The enteral route involves absorption of medication across enteric membranes which line the alimentary canal from the oral cavity, through the digestive tract, ending in the rectum.
Fruits and Farinacea: The Proper Food of Man. (1849). Monthly Journal of Medical Science 9: 1218–1226. He documented how ancient peoples mentioned in the Bible and early nations lived on a fruit and farinaceous diet. Smith argued from the shape and size of human teeth, conformation of the jaw, length of alimentary canal and other anatomical evidence that man was not intended to be either carnivorous or omnivorous.
The ductus pneumaticus from the gas bladder to the gut in a common rudd. Physostomes are fishes that have a pneumatic duct connecting the gas bladder to the alimentary canal. This allows the gas bladder to be filled or emptied via the mouth. This not only allows the fish to fill their bladder by gulping air, but also to rapidly ascend in the water without the bladder expanding to bursting point.
Capitella teleta feeds on the enriched sediment in which it burrows. C. teleta has a complex, regionalized alimentary canal consisting of a foregut, midgut and hindgut. It ingests the sediment by everting its proboscis, which contains a ciliated, muscular dorsal pharynx. Presence of a dorsal pharynx is uncommon in marine polychaetes, and this adaptation may have evolved independently in the family Capitellidae through selective pressures on feeding mode in the benthic marine niche they occupy.
The digestive system of beetles is primarily adapted for a herbivorous diet. Digestion takes place mostly in the anterior midgut, although in predatory groups like the Carabidae, most digestion occurs in the crop by means of midgut enzymes. In the Elateridae, the larvae are liquid feeders that extraorally digest their food by secreting enzymes. The alimentary canal basically consists of a short, narrow pharynx, a widened expansion, the crop, and a poorly developed gizzard.
He was involved in a number of extracurricular activities including editor of the university newspaper l'Ateneo. Although he was enrolled in anatomy, he also incorporated physiology despite resistance from the university to this multidisciplinary approach. He earned his degree in medicine (Laurea in Medicina e Chirurgia, equivalent to MB BS) from the University of Turin in 1967; his M.D. thesis was "The Adrenergic Innervation of the Alimentary Canal" with Dignita di Stampa (worthy of publication).
Characterized by a functional mouth and alimentary canal the veliger stage also has cilia which are used for filtering food as well as propulsion. A thin translucent shell is secreted by the shell gland forming the notable straight hinge of the prodissoconch I shell. The veliger continues to mature forming the prodissoconch II shell. In the end stage of veliger development photosensitive eye spots and elongated foot with a byssal gland are formed.
A single young female confined with six or more males will die in a few days, having laid very few eggs. Similarly, death of a virgin female was reported after admitting a male to her confinement. The female laid only one egg after mating, and her entire body was tinged with red—a condition attributed to rupture of the alimentary canal during the sexual act. Old females frequently die following, if not during, copulation.
Dr. Alderson had some entertaining reminiscences of the journey, which he was accustomed to relate with great zest. He published in 1847 a work on ‘Diseases of the Stomach and Alimentary Canal,’ in which was embodied the result of his extensive experience in a most important class of diseases. He died at his home in Berkeley Square and was buried at West Norwood Cemetery.‘Alderson, Sir James (1794–1882)’ Robert Harrison rev.
This arrangement means the brain, sub-pharyngeal ganglia and the circum-pharyngeal connectives form a nerve ring around the pharynx. The ventral nerve cord (formed by nerve cells and nerve fibres) begins at the sub- pharyngeal ganglia and extends below the alimentary canal to the most posterior body segment. The ventral nerve cord has a swelling, or ganglion, in each segment, i.e. a segmental ganglion, which occurs from the fifth to the last segment of the body.
There is extensive variation among different orders, life stages, and even castes in the digestive system of insects. This is the result of extreme adaptations to various lifestyles. The present description focuses on a generalized composition of the digestive system of an adult orthopteroid insect, which is considered basal to interpreting particularities of other groups. The main structure of an insect's digestive system is a long enclosed tube called the alimentary canal, which runs lengthwise through the body.
Their granules contain a chemical called serotonin, which stimulates smooth muscle contractions. Functionally, it is believed that serotonin diffuses out of the argentaffin cells into the walls of the digestive tract, where neurons leading to the muscles are stimulated to produce the wavelike contractions of peristalsis. Peristaltic movements encourage the passage of food substances through the intestinal tract. The mucosa of bronchi contains numerous neuroendocrine cells which are bronchial counterparts of argentaffin cells of alimentary canal....
The archenteron initially forms, and the mesoderm splits into two layers: the first attaches to the body wall or ectoderm, forming the parietal layer and the second surrounds the endoderm or alimentary canal forming the visceral layer. The space between the parietal layer and the visceral layer is known as the coelom or body cavity. In Deuterostomes, the coelom forms by enterocoely. The archenteron wall produces buds of mesoderm, and these mesodermal diverticula hollow to become the coelomic cavities.
Where the ribs meet the upper edge, they sometimes form crenulations ( a scalloped effect) and may also produce the same effect on the lower edge of the jaw. In other individuals, the ribs extend across the jaw, making both the upper and the cutting edges of the jaw clearly toothed in outline. In the Kerry slug, as in all species within the family Arionidae, the alimentary canal of the digestive system forms two loops."Family summary for Arionidae" .
Snow's analysis of cholera and cholera outbreaks extended past the closure of the Broad Street pump. He concluded that cholera was transmitted through and affected the alimentary canal within the human body. Cholera did not affect either the circulatory or the nervous system and there was no "poison in the blood...in the consecutive fever...the blood became poisoned from urea getting into the circulation". According to Snow, this "urea" entered the blood through kidney failure.
Anderson, ME, Leslie RW, Review of the deep-sea anglerfishes (lophiiformes: ceratioidei) of southern Africa. Ichthyological Bulletin 70-:1-32, 2001. read online Based on finding empty stomachs in captured free-living males, scientists think linophrynid males are unable to feed during their free-living stage after metamorphosis. Also, the “short and stout” denticulars of the upper and lower jaws of these males do not seem suitable for prey capture, and the alimentary canal is undeveloped.
The Supreme Court, in an opinion by Justice Rehnquist joined by Chief Justice Burger and Justices White, Blackmun, Powell and O'Connor, reversed the Ninth Circuit's holding that defendant was subject to an unreasonable search and seizure and upheld the conviction entered for charges brought by the government because custom agents were subject to a reasonable suspicion standard under the Fourth Amendment for detaining suspects. The Supreme Court held that the detention of a traveler at the border, beyond the scope of a routine customs search and inspection, is justified at its inception if customs agents, considering all the facts surrounding the traveler and her trip, reasonably suspect that the traveler is smuggling contraband in her alimentary canal; here, the facts, and their rational inferences, known to the customs officials clearly supported a reasonable suspicion that respondent was an alimentary canal smuggler. Justice Stevens filed a concurring opinion, while Justice Brennan, joined by Justice Marshall dissented, stating that "Indefinite involuntary incommunicado detentions "for investigation" are the hallmark of a police state, not a free society"..
The gastrointestinal tract, (GI tract, GIT, digestive tract, digestion tract, alimentary canal) is the tract from the mouth to the anus which includes all the organs of the digestive system in humans and other animals. Food taken in through the mouth is digested to extract nutrients and absorb energy, and the waste expelled as feces. The mouth, esophagus, stomach and intestines are all part of the gastrointestinal tract. Gastrointestinal is an adjective meaning of or pertaining to the stomach and intestines.
The incomplete alimentary canal consists of a pair of lateral pouches arising from the oral sucker and a slightly tortuous pharyngeal tube, which bifurcates into two gut caeca. The large excretory bladder is in the middle, behind the ventral sucker. The species, being hermaphrodite, has both male and female reproductive systems, arranged in the posterior region. The testes lie in alongside the bifurcation of the caeca, and a common genital pore is on the cone just anterior to the bifurcation.
The body has a chitinous cuticle that is moulted as the animal grows. There is a wide body-cavity, which has no connection with the renal or reproductive organs, so it is not a coelom; it is probably a blood-space or hemocoel. There are no vascular or respiratory systems, but the body cavity does contain phagocytic amoebocytes and cells containing the respiratory pigment haemerythrin. The alimentary canal is straight, consisting of an eversible pharynx, an intestine, and a short rectum.
These two cases indicate that NKCE involvement is not totally limited to the alimentary canal. Three of 15 individuals diagnosed with NKCE disease reported no symptoms, their disease being found on endoscopy conducted for screening purposes. Typically, patients diagnosed with LG (medium age 58 years) have been asymptomatic at presentation with their disease being detected during GI tract examinations done for other reasons. Three of twenty patients diagnosed with LG complained of pain or discomfort in the upper abdominal region.
In the hindgut (element 16 in numbered diagram), or proctodaeum, undigested food particles are joined by uric acid to form fecal pellets. The rectum absorbs 90% of the water in these fecal pellets, and the dry pellet is then eliminated through the anus (element 17), completing the process of digestion. The uric acid is formed using hemolymph waste products diffused from the Malpighian tubules (element 20). It is then emptied directly into the alimentary canal, at the junction between the midgut and hindgut.
Adult schistosomes share all the fundamental features of the digenea. They have a basic bilateral symmetry, oral and ventral suckers, a body covering of a syncytial tegument, a blind-ending digestive system consisting of mouth, esophagus and bifurcated caeca; the area between the tegument and alimentary canal filled with a loose network of mesoderm cells, and an excretory or osmoregulatory system based on flame cells. Adult worms tend to be long and use globins from their hosts' hemoglobin for their own circulatory system.
Inside the stomach of the sandfly, the amastigotes quickly transform into elongated and motile forms called the promastigotes. Promastigote is spindle-shaped, triple the size of the amastigote, and has a single flagellum that allows mobility. The promastigotes live extracellularly in the alimentary canal, reproducing asexually, then migrate to the proximal end of the gut where they become poised for a regurgitational transmission. As the fly bites, the promastigotes are released from the proboscis and introduced locally at the bite site.
In human anatomy, the mouth is the first portion of the alimentary canal that receives food and produces saliva. The oral mucosa is the mucous membrane epithelium lining the inside of the mouth. In addition to its primary role as the beginning of the digestive system, in humans the mouth also plays a significant role in communication. While primary aspects of the voice are produced in the throat, the tongue, lips, and jaw are also needed to produce the range of sounds included in human language.
GastroenterologyMeSH heading gastroenterology is the branch of medicine focused on the digestive system and its disorders. Diseases affecting the gastrointestinal tract, which include the organs from mouth into anus, along the alimentary canal, are the focus of this speciality. Physicians practicing in this field are called gastroenterologists. They have usually completed about eight years of pre-medical and medical education, a year-long internship (if this is not a part of the residency), three years of an internal medicine residency, and three years in the gastroenterology fellowship.
Gastrointestinal physiology is the branch of human physiology that addresses the physical function of the gastrointestinal (GI) tract. The function of the GI tract is to process ingested food by mechanical and chemical means, extract nutrients and excrete waste products. The GI tract is composed of the alimentary canal, that runs from the mouth to the anus, as well as the associated glands, chemicals, hormones, and enzymes that assist in digestion. The major processes that occur in the GI tract are: motility, secretion, regulation, digestion and circulation.
This diapause is induced by signals heralding the arrival of the unfavourable season; usually the cue is photoperiodic. Short (decreasing) day length serves as a signal of approaching winter and induces winter diapause (hibernation). A study of hibernation in the Arctic beetle Pterostichus brevicornis showed that the body fat levels of adults were highest in autumn with the alimentary canal filled with food, but empty by the end of January. This loss of body fat was a gradual process, occurring in combination with dehydration.
The foregut is the anterior part of the alimentary canal, from the mouth to the duodenum at the entrance of the bile duct. Beyond the stomach, the foregut is attached to the abdominal walls by mesentery. The foregut arises from the endoderm, developing from the folding primitive gut, and is developmentally distinct from the midgut and hindgut. Although the term “foregut” is typically used in reference to the anterior section of the primitive gut, components of the adult gut can also be described with this designation.
The ureter, likewise, is difficult to trace throughout a portion of its course. Its external opening is immediately behind that of the alimentary canal, and from this point is readily followed to the region of the pericardium, where it decreases in caliber and passes into a network of blood vessels. It appears that the kidney is in contact, along its inner face, with a slender sack or tube with which the ureter communicates. There are no special features of the digestive system of Anostoma depressum.
Stylised diagram of the last part of the insect's digestive tract showing malpighian tubule (Orthopteran type) The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids, and tardigrades. The system consists of branching tubules extending from the alimentary canal that absorbs solutes, water, and wastes from the surrounding hemolymph. The wastes then are released from the organism in the form of solid nitrogenous compounds and calcium oxalate. The system is named after Marcello Malpighi, a seventeenth-century anatomist.
United States.. Reference was also made to a history of searches of closed containers such as a briefcases, purses, wallets, pockets, pictures, film, and other graphic material. These items are the equivalent of a closed container, and have traditionally been searched at the border without particularized suspicion. It is acknowledged that some limits have been made, specifically a traveler's alimentary canal. Such limitations are made when searching a person, not their objects in possession, in the interest of human dignity and privacy, which the Fourth Amendment protects.
The CNS consists of a bilobed brain (cerebral ganglia, or supra-pharyngeal ganglion), sub-pharyngeal ganglia, circum-pharyngeal connectives and a ventral nerve cord. Earthworms' brains consist of a pair of pear-shaped cerebral ganglia. These are located in the dorsal side of the alimentary canal in the third segment, in a groove between the buccal cavity and pharynx. A pair of circum-pharyngeal connectives from the brain encircle the pharynx and then connect with a pair of sub-pharyngeal ganglia located below the pharynx in the fourth segment.
Blood vessels, lymphatic vessels, and nerves (all supplying the mucosa) will run through here. In the intestinal wall, tiny parasympathetic ganglia are scattered around forming the submucous plexus (or "Meissner's plexus") where preganglionic parasympathetic neurons synapse with postganglionic nerve fibers that supply the muscularis mucosae. Histologically, the wall of the alimentary canal shows four distinct layers (from the lumen moving out): mucosa, submucosa, muscularis externa, and a either a serous membrane or an adventitia. In the gastrointestinal tract and the respiratory tract the submucosa contains the submucosal glands that secrete mucus.
There is no specialization within this type of digestive system because every cell is exposed to all stages of food digestion. Specializing occurs when the digestive tract or alimentary canal has a separate mouth and anus so that transport of food is one-way. The most primitive digestive tract is seen in nematodes (phylum Nematode), where it is simply a tubular gut lined by an epithelial membrane. Earthworms (phylum Annelids) have a digestive tract specialized in different regions for the ingestion, storage, fragmentation, digestion and absorption of food.
In 2000, over 74 years after his death, he was reinstated to the Bar. Notably, these convictions were not reversed on the basis that oral sex was not covered under Oregon's sodomy law, as the legislature feared the court might rule. In fact, despite legislation previous to Start ensuring that fellatio counted as a "crime against nature," the court ruled that this was necessarily true because, among other reasons, the mouth and anus are both openings of the alimentary canal and therefore equally unsuited to sexual intercourse.Boag, pp. 204–5.
The constriction between the anterior and posterior parts of the animal shows creasing, and the authors hypothesize that it was quite flexible. The fossils are interpreted as showing a large anterior opening, presumably a mouth, a spacious anterior cavity, an alimentary canal, possibly voluminous in the anterior section, and a narrow intestine in the posterior section, straight or coiled (in one specimen). There are five structures on each side of the anterior portion that the authors interpret as gills. Narrow strands towards the lateral margins, sometimes branched, may represent vascular tissue.
Some species, such as Myzostoma cirriferum, move about on the host; others, such as Myzostoma glabrum, remain stationary with the pharynx inserted in the mouth of the crinoid. Myzostoma deformator gives rise to a gall on the arm of the host, one joint of the pinnule growing round the worm so as to enclose it in a cyst while Myzostoma pulvinar lives in the alimentary canal of a species of Antedon. Fridtjof Nansen wrote in 1885 the thesis Bidrag til myzostomernes anatomi og histologi Bidrag til myzostomernes anatomi og histologi on the Myzostomida.
While the ventral sets are prominent, the dorsal set is hidden deeper in the buccal capsule. A. caninum bends its head end upward (dorsally), which has been noted to be a potential source of confusion when determining how the hookworm is oriented. If it has recently ingested blood, A. caninum is red in colour; if not, it appears grey. A. caninum has an alimentary canal made up of an esophagus, intestine, and rectum – the esophagus is highly muscular, reflecting its role in pulling intestinal mucosa into the body when it feeds.
Physoclisti are, collectively, fishes that lack a connection between the gas bladder and the alimentary canal, with the bladder serving only as a buoyancy organ. Addition and removal of the gases from the gas bladder in such physoclistous fishes occurs through specialised structures called the gas gland and ovale respectively. The pneumatic duct that connects the gut and gas bladder is present in the embryos of these fish but it is lost during development. This anatomical state (the physoclistous condition) is believed to be evolutionarily derived from the ancestral physostomous state.
Aquatic craniates have gill slits, which are connected to muscles and nerves that pump water through the slits, engaging in both feeding and gas exchange (as opposed to lancelets, whose pharyngeal slits are used only for suspension feeding). Muscles line the alimentary canal, moving food through the canal, allowing higher craniates such as mammals to develop more complex digestive systems for optimal food processing. Craniates have cardiovascular systems that include a heart with two or more chambers, red blood cells, and oxygen transporting hemoglobin, as well as kidneys.
The three regions include the foregut (stomatodeum)(27,) the midgut (mesenteron)(13), and the hindgut (proctodeum)(16). In addition to the alimentary canal, insects also have paired salivary glands and salivary reservoirs. These structures usually reside in the thorax (adjacent to the fore-gut). The salivary glands (30) produce saliva; the salivary ducts lead from the glands to the reservoirs and then forward through the head to an opening called the salivarium behind the hypopharynx; which movements of the mouthparts help mix saliva with food in the buccal cavity.
A human flatulence Non-medical definitions of the term include "the uncomfortable condition of having gas in the stomach and bowels", or "a state of excessive gas in the alimentary canal". These definitions highlight that many people consider "bloating", abdominal distension or increased volume of intestinal gas, to be synonymous with the term flatulence (although this is technically inaccurate). Colloquially, flatulence may be referred to as "farting", "pumping", "trumping", "blowing off", "tooting", "pooting", "passing gas", "breaking wind" or simply (in American English) "gas" or (British English) "wind". Derived terms include vaginal flatulence, otherwise known as a queef.
Rose Elvira Montoya de Hernandez entered the United States at Los Angeles International Airport from Bogotá, Colombia. Customs inspectors detained Montoya de Hernandez upon her arrival based upon a suspicion that she was smuggling drugs. After 16 hours and a rectal examination by a physician that produced a balloon containing a foreign substance, she passed balloons filled with cocaine from her alimentary canal. The defendant had claimed that she was pregnant, and she was given the opportunity to undergo an X-ray, but she refused after being informed that she would have to be handcuffed en route to the hospital.
This fermentation is anaerobic, and allows the microbes in the reticulorumen to derive the energy and amino nitrogen for growth and reproduction. Ruminants absorb the VFAs across the reticulorumen wall as an energy source, while the microbes eventually flow out of the rumen into the remainder of the alimentary canal, where their constituent proteins are eventually digested and absorbed. The reticulum, at approximately 5–20 litres, is considerably smaller in capacity than the rumen, which is approximately 100–200 litres in cattle. The oesophageal groove, which links the oesophagus and the omasum, is located in the reticulum.
After holding some minor appointments at his own medical school he was elected lecturer on forensic medicine at St. Thomas's Hospital. He early acquired a considerable practic, became physician to St. Thomas's Hospital, and in addition to his other lectureship was made lecturer on physiology there. He married in 1854 Mary Danvers, daughter of Frederick Danvers of London, and lived in Brook Street, Grosvenor Square, and his practice steadily increased. Intestinal obstruction and diseases of the alimentary canal in general were subjects to which he had paid special attention, and on which he was often consulted.
Systemic bioavailability of orally consumed glutathione is poor because the tripeptide is the substrate of proteases (peptidases) of the alimentary canal, and due to the absence of a specific carrier of glutathione at the level of cell membrane. Because direct supplementation of glutathione is not successful, supply of the raw nutritional materials used to generate GSH, such as cysteine and glycine, may be more effective at increasing glutathione levels. Other antioxidants such as ascorbic acid (vitamin C) may also work synergistically with glutathione, preventing depletion of either. The glutathione-ascorbate cycle, which works to detoxify hydrogen peroxide (H2O2), is one very specific example of this phenomenon.
C. rufifacies has been used successfully in maggot therapy to treat patients with osteomyelitis, a microbial infection of the bone. C. rufifacies can be a vector for enteric pathogens in countries such as India and Australia, specifically, if it enters homes due to its attraction to feces, fruits, meats, and refuse. Multiple pathogens such as Bacillus bacteria, roundworms, and pinworms have been recovered from the alimentary canal and feces of C. rufifacies. The late instars of the species are beneficial medically by acting as predators of maggots of pathogen-transmitting and myiasis-producing flies; thus, the larvae can be used as beneficial and effective biological control agents.
A freshwater crocodile at Basel Zoo in Switzerland In animal anatomy, the mouth, also known as the oral cavity, buccal cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds. It is also the cavity lying at the upper end of the alimentary canal, bounded on the outside by the lips and inside by the pharynx and containing in higher vertebrates the tongue and teeth. This cavity is also known as the buccal cavity, from the Latin bucca ("cheek"). Some animal phyla, including vertebrates, have a complete digestive system, with a mouth at one end and an anus at the other.
The dose of scammonium is 5 to 10 grains, of scammony resin 3 to 8 grains. Like certain other resins, scammony is inert until it has passed from the stomach into the duodenum, where it meets the bile, a chemical reaction occurring between it and the taurocholate and glycocholate of sodium, whereby it is converted into a powerful purgative. Its action is essentially that of a hydragogue, and is exercised upon practically the entire length of the alimentary canal. The drug is not a cholagogue, nor does it markedly affect the muscular coat of the bowel, but it causes a great increase of secretion from the intestinal glands.
A water buffalo chewing cud The alimentary canal of ruminants, such as cattle, giraffes, goats, sheep, alpacas, and antelope, are unable to produce the enzymes required to break down the cellulose and hemicellulose of plant matter. Accordingly, these animals have developed a symbiotic relationship with a wide range of microbes, which largely reside in the reticulorumen, and which are able to synthesize the requisite enzymes. The reticulorumen thus hosts a microbial fermentation which yields products (mainly volatile fatty acids and microbial protein), which the ruminant is able to digest and absorb. This allows the animals to extract nutritional value from cellulose which is usually undigested.
The function of rumination is that food is physically refined to expose more surface area for bacteria working in the reticulorumen, as well as stimulation of saliva secretion to buffer the rumen pH. When food has been degraded sufficiently it passes from the reticulorumen through the reticulo- omasal orifice to the omasum followed by the abomasum to continue the digestion process in the lower parts of the alimentary canal. No enzymes are secreted in the rumen. Enzymes and hydrochloric acid are only secreted from the abomasum (fourth stomach) onwards, and ruminants function from that point onwards much like monogastric animals, such as pigs and humans.
By 1805, the use of rectally applied tobacco smoke was so established as a way to treat obstinate constrictions of the alimentary canal that doctors began experimenting with other delivery mechanisms. In one experiment, a decoction of half a drachm of tobacco in four ounces of water was used as an enema in a patient suffering from general convulsion where there was no expected recovery. The decoction worked as a powerful agent to penetrate and "roused the sensibility" of the patient to end the convulsions, although the decoction resulted in excited sickness, vomiting, and profuse perspiration. Such enemas were often used to treat hernias.
In a 2006 study of early bird relationships, it was found that Yanornis, Yixianornis, and Songlingornis formed a monophyletic group; since Songlingornis was the first of these birds to be described, the family containing this group is Songlingornithidae. The order Yanornithiformes has been erected to mark their distinctness from other early Ornithurae such as Gansus, but might be called Songlingornithiformes; especially if the present taxon is indeed a junior synonym of Songlingornis as sometimes proposed. Reconstructed alimentary canal superimposed over a specimen of Y. martini The cladogram below follows O’Connor et al., 2013 phylogenetic analysis. The clade names are positioned based on their definitions (contra O’Connor et al. (2013)).
In the ventral reticulum, less dense, larger digesta particles may be propelled up into the oesophagus and mouth during contractions of the reticulum. Digesta is chewed in the mouth in a process known as rumination, then expelled back down the oesophagus and deposited in the dorsal sac of the reticulum, to be lodged and mixed into the ruminal mat again. Denser, small particles stay in the ventral reticulum during reticular contraction, and then during the next contraction may be swept out of the reticulorumen with liquid through the reticulo-omasal orifice, which leads to the next chamber in the ruminant animal's alimentary canal, the omasum. Water and saliva enter through the rumen to form a liquid pool.
The number of egg cell in each egg capsule is an identifying feature of each species. Eggs develop into larval forms called oncospheres, which are ingested by ants, and enters the alimentary canal, from where they migrates into the abdominal cavity of the insect and develops into mature cysticercoids. A cysticercoid is an inflated sphere with distinct rostellar hooks, and each species has characteristic number and size of the hooks, which correspond to those of adult worms. Development of the juvenile stage in the intermediate host comprises 5 stages, namely (1) oncosphere stage, (2) lacuna stage, (3) cystic cavity stage, (4) scolex formation stage and (5) cysticercoid stage, which is the ultimate infective form.
Markuelia is a genus of fossil worm-like bilaterian animals allied to Ecdysozoa and known from strata of Lower Cambrian to Lower Ordovician age containing five species. An advanced X-ray imaging technique called X-ray tomographic microscopy has been applied to splendidly preserved, uncrushed Markuelia fossils found in Hunan province in southern China and in eastern Siberia. When details in features smaller than one micrometre across can be observed, these fossils are seen to represent many developmental stages, from the first cell divisions to the time of hatching; therefore they offer a unique opportunity to study the development of Lower Cambrian animals. The features observed indicate that the genus had a mouth surrounded by a ring of teeth, an alimentary canal, and an anus.
Mary Roach (born March 20, 1959) is an American author, specializing in popular science and humor. , she has published seven books: Stiff: The Curious Lives of Human Cadavers (2003), Spook: Science Tackles the Afterlife (2005) (published in some markets as Six Feet Over: Adventures in the Afterlife), Bonk: The Curious Coupling of Science and Sex (2008), Packing for Mars: The Curious Science of Life in the Void (2010), My Planet: Finding Humor in the Oddest Places, Gulp: Adventures on the Alimentary Canal (2013), and Grunt: The Curious Science of Humans at War (2016). Roach is noted for her curiosity and humor in addition to her research. Her many humor-laced articles in various publications over the decades include her monthly humor column, "My Planet", in Reader's Digest.
Although routine searches of the persons and effects of entrants are not subject to any requirement of reasonable suspicion, probable cause, or warrant, more invasive searches or seizures of a person's body require some suspicion. The Supreme Court has held "that the detention of a traveler at the border, beyond the scope of a routine customs search and inspection, is justified at its inception if customs agents, considering all the facts surrounding the traveler and her trip, reasonably suspect that the traveler is smuggling contraband in her alimentary canal."United States v. Montoya de Hernandez, 473 US 531 - Supreme Court 1985 Characterized in terms of the Fourth Amendment, the Court was saying that such a detention ("seizure") was "reasonable", and therefore did not violate the Fourth Amendment.
The prey is caught with the tarsi and immobilized as a result of the paralysis caused by the injection of saliva. The asilid pierces the integument of the prey with the prepharyx (hyopharynx) in preferential points of least resistance as the eyes, the membranous area of transition between the head and thorax (neck) or between thorax and abdomen, or between the last urotergiti. Puncture is followed by the injection of saliva, whose active components perform two functions: the neurotoxins cause paralysis of the victim, while proteolytic enzymes lead to the breakup and liquefaction of internal tissues; in a short time the predator is able to feed by sucking the internal fluids through the alimentary canal. With regard to interspecific trophic relationships, there is a large number of reports on the prey captured by Asilidae.
She described a nation of intellectual mediocrity where it was a crime to excel in anything, and where aristocracy and learning are detested and feared. The book's universe was based on a rigid equality, one house being precisely like every other house; where everyone's clothes were the same; where women were on the same footing as men; where there was no home life; where the children were reared in a government "kindergarten" without a parental love or care; where even food was prescribed by a state official, and in the shape of pellets sent whirling into the socialist's alimentary canal through a government "culinary duct"; where the people were pining away from mental and physical inactivity; where there was no God, no religion, no object in life worth living for, but there was a centralized government.
There are also two buccal septate suckers at the anterior extremity. The digestive organs include an anterior, terminal mouth, a pharynx, and a posterior intestine with two branches provided with only a few short branches towards the median side, the left branch is longer than the right, and both branches extends for a certain distance into the haptor. Each adult contains male and female reproductive organs. The reproductive organs include a genital atrium opening a little in front of the point of bifurcation of the alimentary canal, armed with conical slightly curved spines, unarmed vagina opening middorsally behind the common genital opening, a single ovary, with an anterior portion shaped as in inversed V and a posterior portion somewhat S-shaped, about 40 small testes posterior to the ovary and occupying a little less than one-fifth the whole length of the body.
Forensic entomologists can use various extraction methods to test the composition of the alimentary canal of the larvae to determine if victims had any drugs or mind-altering substances in their systems before they were killed. It is important, though, for forensic entomologists to determine whether the Old World screwworm, Chrysomya rufifacies, is present in the maggot masses on the body, because C. rufifacies is usually after C. macellaria in the succession of colonising a body and C. rufifacies second- and third-instar larvae are facultatively predatory. This could result in a post mortem interval being off by a few days at the most if the C. rufifacies were to prey upon all of the C. macellaria larvae. Secondary screwworms have the stereotypical metallic green body of the genus, and the larvae are extremely similar to those of C. hominivorax.
The eyespot rasbora is an elongate fish, with a pointed snout, whose base colour is a reflective, metallic silver, though under some lighting conditions, the fish can take on a yellowish hue, with a slight pink flush present in the ventral area of the body between the operculum and the pelvic fins (corresponding roughly to the sac enclosing the alimentary canal). Under conditions of reflected light, the fish sometimes displays a fine lateral band from the operculum to the end of the caudal peduncle (Walker, 1971, p. 98) this being an olive-gold hue. The fins, with the exception of the dorsal fin, are hyaline, the relation of the pectoral and pelvic fins being typical of the ostariophysans (fishes possessing an auxiliary mechanism for detecting sound consisting of a set of internal bones called the Weberian Ossicles).
Worms of the genus Serpula have a very unusual dual circulatory system, consisting of a central system of large vessels through which a continuous true circulation of blood is maintained, and also a peripheral system of small, predominantly blind-ending vessels which alternately empty and fill in a tidal fashion. In the central circulatory system, the blood moves anteriorly from the tip of the abdomen to the front of the thorax through a sinus enveloping the alimentary canal, and posteriorly through a ventral blood vessel. The ventral vessel and the sinus communicate with each other by segmentally arranged ring vessels, and by a dorsal vessel, a transverse vessel, and a pair of circumesophageal vessels situated at the anterior end of the thorax. The dorsal vessel in some of the larger serpulids, like Serpula, possesses a valve and a muscular sphincter, probably to prevent backflow of blood from the transverse vessel.
The most convincing evidence of paleoparasitism is obtained when a presumed parasite is found in direct association with its presumed host, in a context that is consistent with known host-parasite associations. Some examples include helminths caught in amber in the process of escaping from the body of an insect, lice found in the fur of guinea pig mummies, protozoans in the alimentary canal of flies in amber, nematode larvae found embedded in animal coprolites, and a mite caught in amber in the process of apparently feeding on a spider. Fossil organisms which are related to present-day parasites often possess the morphological features associated with a parasitic lifestyle, such as blood-feeding mouthparts. So fossil ticks and hematophagous insectsLukashevich, E.D. and M.B. Mostovski (2003) Hematophagous insects in the fossil record. Paleontologicheskii Zhurnal 2003(2):48-56 (Russian) / Paleontological Journal 37(2):153-161 (English).
Some fermentation products, such as fatty acids longer than two carbon atoms, alcohols longer than one carbon atom, and branched-chain and aromatic fatty acids, cannot directly be used in methanogenesis. In acetogenesis process, these products are oxidized to acetate and H2 by obligated proton reducing bacteria in syntrophic relationship with methanogenic archaea as low H2 partial pressure is essential for acetogenic reactions to be thermodynamically favorable (ΔG < 0). The number of bacterial cells that live on or in the human body, for example throughout the alimentary canal and on the skin, is in the region of 10 times the total number of human cells in it.Crazy Way Microbes Colonize, Control The Human Body interview with Dr. Justin Sonnenburg, assistant professor of microbiology and immunology at Stanford University School of Medicine These microbes are vital, for instance for the digestive and the immune system to function.
The first Onychopterella fossils, belonging to O. kokomoensis, were discovered in 1896 at the Waterlime Group of Kokomo, Indiana. The species has received attention from eurypterid researchers for its terminal claw in the sixth pair of appendages or swimming legs. Onychopterella is also the type genus of the basal ("primitive") family of eurypterines Onychopterellidae together with Alkenopterus and Tylopterella, characterized by the presence of spines on the second to fourth pair of appendages and a lack of them on the fifth and sixth pair of appendages (except occasionally one on the distal end of the swimming leg), as well as the lanceolate (lance-shaped) or styliform (pen-shaped) form of the telson and other characteristics. The exceptional preservation of the fossils of O. augusti has permitted scientists to describe part of the alimentary canal that has only been observed in a few species of eurypterids, as well as the internal muscular structure of its limbs and even part of the external branchial respiratory system.

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