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In anatomy of the digestive system, the ileum is the final section of the small intestine. It is about 2-4 m long in humans, follows the duodenum and jejunum, and is separated from the cecum by the ileocecal valve (ICV). The pH in the ileum is usually between 7 and 8 (neutral or slightly alkaline). Image File history File linksMetadata Illu_small_intestine. ...
Image File history File links Gray1045. ...
The cecum or caecum (from the Latin caecus meaning blind) is a pouch connected to the ascending colon of the large intestine and the ileum. ...
For other uses, see Artery (disambiguation). ...
In the circulatory system, a vein is a blood vessel that carries blood toward the heart. ...
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The Celiac Ganglia (semilunar ganglia) are two large irregularly shaped masses having the appearance of lymph glands and placed one on either side of the middle line in front of the crura of the diaphragm close to the suprarenal glands, that on the right side being placed behind the inferior...
The vagus nerve is tenth of twelve paired cranial nerves and is the only nerve that starts in the brainstem (somewhere in the medulla oblongata) and extends all the way down past the head, right down to the abdomen. ...
This article or section is in need of attention from an expert on the subject. ...
The midgut is the portion of the embryo from which most of the intestines are derived. ...
The ilium of the pelvis is divisible into two parts, the body and the ala; the separation is indicated on the internal surface by a curved line, the arcuate line, and on the external surface by the margin of the acetabulum. ...
Human heart and lungs, from an older edition of Grays Anatomy. ...
what was here was sick and improperly spelled. ...
In biology the small intestine is the part of the gastrointestinal tract (gut) between the stomach and the large intestine and includes the duodenum, jejunum, and ileum. ...
This article is about modern humans. ...
In anatomy of the digestive system, the duodenum is a hollow jointed tube about 25-30 cm long connecting the stomach to the jejunum. ...
Diagram of the Human Intestine In anatomy of the digestive system, the jejunum is the central of the three divisions of the small intestine and lies between the duodenum and the ileum. ...
The cecum or caecum (from the Latin caecus meaning blind) is a pouch connected to the ascending colon of the large intestine and the ileum. ...
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Function Its function is mainly to absorb vitamin B12 and bile salts and whatever products of digestion that were not absorbed by the jejunum. The wall itself is made up of folds, each of which has many tiny finger-like projections known as villi, on its surface. In turn, the epithelial cells which line these villi possess even larger numbers of microvilli. Therefore the ileum has an extremely large surface area both for the adsorption (attachment) of enzyme molecules and for the absorption of products of digestion. The DNES (diffuse neuroendocrine system)cells that line the ileum contain the protease and carbohydrase enzymes (gastrin, secretin, cholecystokinin) responsible for the final stages of protein and carbohydrate digestion. These enzymes are present in the cytoplasm of the epithelial cells. The villi contain large numbers of capillaries which take the amino acids and glucose produced by digestion to the hepatic portal vein and the liver. Cobalamin or vitamin B12 is a chemical compound that is also known as cyanocobalamine. ...
Bile is also another name for Belenus, a god in Brythonic mythology. ...
Villi (singular: villus) are tiny, finger-like structures that protrude from the wall of the intestine to help absorb nutrients in the lumen. ...
Categories: Stub ...
Not to be confused with absorption. ...
Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ...
For the industrial process, see anaerobic digestion. ...
A representation of the 3D structure of myoglobin showing coloured alpha helices. ...
Lactose is a disaccharide found in milk. ...
Schematic showing the cytoplasm, with major components of a typical animal cell. ...
In zootomy, epithelium is a tissue composed of a layer of cells. ...
The portal vein is a major vein in the human body draining blood from the digestive system and its associated glands. ...
Lacteals are small lymph vessels, and are present in villi. They absorb fatty acid and glycerol, the products of fat digestion. Layers of circular and longitudinal smooth muscle enable the digested food to be pushed along the ileum by waves of muscle contractions called peristalsis. A lacteal is a lymphatic capillary that absorbs dietary fats in the microvilli of the small intestine. ...
Not to be confused with fats. ...
Glycerine, Glycerin redirects here. ...
Smooth muscle Layers of Esophageal Wall: 1. ...
Peristalsis is the rhythmic contraction of smooth muscles to propel contents through the digestive tract. ...
Differences between jejunum and ileum There is no line of demarcation between the jejunum and the ileum. There are, however, subtle differences between the two. - The ileum has more fat inside the mesentery than the jejunum.
- The ileum is a paler color, and tends to be of a smaller caliber as well.
- While the length of the intestinal tract contains lymphoid tissue, only the ileum has abundant Peyer's patches.
These unencapsulated lymphoid nodules contain large amounts of lymphocytes and other cells of the immune system. In mammals including humans, the lymphatic vessels (or lymphatics) are a network of thin tubes that branch, like blood vessels, into tissues throughout the body. ...
Peyers patches are secondary lymphoid organs, named after the 17th-century Swiss anatomist Johann Conrad Peyer. ...
Structure of the lymph node. ...
A scanning electron microscope (SEM) image of a single human lymphocyte. ...
A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). ...
Embryology In the fetus the ileum is connected to the navel by the vitelline duct. In roughly 3% of humans, this duct fails to close during the first seven weeks after birth, causing a condition called Meckel's diverticulum. For other uses, see Fetus (disambiguation). ...
For other uses, see Navel (disambiguation). ...
At the end of the fourth week the yolk-sac presents the appearance of a small pear-shaped vesicle (umbilical vesicle) opening into the digestive tube by a long narrow tube, the vitelline duct. ...
A Meckels diverticulum is a true congenital diverticulum. ...
Veterinary anatomy In veterinary anatomy, the ileum is distinguished from the jejunum by being that portion of the jejunoileum that is connected to the caecum by the ileocaecal fold. In anatomy of the digestive system, the cecum or caecum is a pouch connected to the large intestine between the ileum and the colon. ...
Additional images Inferior ileocecal fossa. Image File history File links Gray1044. ...
| Arteries of cecum and vermiform process. Image File history File links Gray536. ...
| Goblet cell in ileum Image File history File links No higher resolution available. ...
Goblet cells are glandular simple columnar epithelial cells whose sole function is to secrete mucus. ...
| General structure of the gut wall. |
References - ^ Physiology at MCG 6/6ch2/s6ch2_30
In 1828 the Medical Academy of Georgia was chartered by the state of Georgia with plans to offer a single course of lectures leading to a bachelors degree. ...
External links | Anatomy of torso, digestive system: Gastrointestinal tract | | | Upper GI: to stomach | | | | Upper GI: stomach | | | | Lower GI: intestines | Small intestine: Duodenum ( Suspensory muscle, Major duodenal papilla, Minor duodenal papilla) • Duodenojejunal flexure • Jejunum • Ileum • continuous ( intestinal villus, crypts of Lieberkühn, circular folds) Junction: Vermiform appendix • Ileocecal valve The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City. ...
Not to be confused with University of the State of New York. ...
Not to be confused with University of the State of New York. ...
For the similarly named institution in Chestnut Hill, see Boston College. ...
List of bones of the human skeleton Human anatomy is primarily the scientific study of the morphology of the adult human body. ...
The human torso Torso is an anatomical term for the greater part of the human body without the head and limbs. ...
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Gut redirects here. ...
Sagittal section of nose mouth, pharynx, and larynx. ...
The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ...
The nasopharynx (nasal part of the pharynx) lies behind the nose and above the level of the soft palate: it differs from the oral and laryngeal parts of the pharynx in that its cavity always remains patent (open). ...
The pharynx is the part of the digestive system of many animals immediately behind the mouth and in front of the esophagus. ...
In human anatomy, the hypopharynx is the bottom part of the pharynx, and is the part of the throat that connects to the esophagus. ...
The esophagus or oesophagus (see American and British English spelling differences), sometimes known as the gullet, is an organ in vertebrates which consists of a muscular tube through which food passes from the pharynx to the stomach. ...
A crop is a thin-walled expanded portion of the alimentary tract used for the storage of food prior to digestion that is found in many animals, including gastropods, earthworms[1], leeches[2], insects, birds and clowns. ...
In anatomy, the stomach is a bean-shaped hollow muscular organ of the gastrointestinal tract involved in the second phase of digestion, following mastication. ...
Stomach. ...
Gastric pits are indentations in the stomach which denote entrances to the glands. ...
This article is about the cardia in the human body. ...
The cardiac glands of the stomach are few in number and occur close to the cardiac orifice where the esophagus joins the stomach. ...
The left portion of the body of the stomach is known as the fundus, and is marked off from the remainder of the body by a plane passing horizontally through the cardiac orifice. ...
The fundus glands (or fundic glands) are found in the body and fundus of the stomach; they are simple tubes, two or more of which open into a single duct. ...
From Greek pylorus; pyl- = gate, -orus = guard. ...
The pyloric glands are found in the pyloric portion of the stomach. ...
Pyloric antrum is initial portion of the pyloric part of the stomach, which may temporarily become partially or completely shut off from the remainder of the stomach during digestion by peristaltic contraction of the prepyloric sphincter; it is demarcated, sometimes, from the second part of the pyloric part of the...
The pyloric canal, also known as the canalis pyloricus, is the opening between the stomach and the small intestine [1]. Pylorus University of Illinois Medical Center at Chicago Health Library Category: ...
The greater curvature of the stomach is directed mainly forward, and is four or five times as long as the lesser curvature. ...
The lesser curvature of the stomach, extending between the cardiac and pyloric orifices, forms the right or posterior border of the stomach. ...
In anatomy, the intestine is the segment of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine. ...
In biology the small intestine is the part of the gastrointestinal tract (gut) between the stomach and the large intestine and includes the duodenum, jejunum, and ileum. ...
In anatomy of the digestive system, the duodenum is a hollow jointed tube about 25-30 cm long connecting the stomach to the jejunum. ...
The suspensory muscle of the duodenum is the proper name of what is commonly known as the ligament of Treitz, and it refers to tissue that connects the duodenum of the small intestines to the diaphragm. ...
The common bile duct and the pancreatic duct together perforate the medial side of the second portion of the duodenum obliquely, some 7 to 10 cm. ...
The minor duodenal papilla is the opening of the accessory pancreatic duct into the duodenum. ...
The ascending portion of the duodenum ascends on the left side of the aorta, as far as the level of the upper border of the second lumbar vertebra, where it turns abruptly forward to become the jejunum, forming the duodenojejunal flexure. ...
Diagram of the Human Intestine In anatomy of the digestive system, the jejunum is the central of the three divisions of the small intestine and lies between the duodenum and the ileum. ...
Intestinal villi (singular: villus) are tiny, finger-like structures that protrude from the wall of the intestine and have additional extensions called microvilli (singular: microvillus) which protrude from epithelial cells lining villi. ...
The crypts of Lieberkühn are glands found in the epithelial lining of the small intestine. ...
The circular folds (valves of Kerkring) are large valvular flaps projecting into the lumen of the bowel. ...
In human anatomy, the vermiform appendix (or appendix, pl. ...
This page is a candidate for speedy deletion, because: lack of content If you disagree with its speedy deletion, please explain why on its talk page or at Wikipedia:Speedy deletions. ...
Large intestine: Cecum • Colon ( ascending colon, hepatic flexure, transverse colon, splenic flexure, descending colon, sigmoid colon) • continuous ( taenia coli, haustra, epiploic appendix) | | | Lower GI: termination | Rectum: Houston valve • rectal ampulla • pectinate line Anal canal: anal valves • anal sinuses • anal columns • Hilton's white line The large intestine, an organ which is now more commonly referred to by its Greek name, the colon, is the last part of the digestive system: the final stage of the alimentary canal in vertebrate animals. ...
The cecum or caecum (from the Latin caecus meaning blind) is a pouch connected to the ascending colon of the large intestine and the ileum. ...
It has been suggested that this article or section be merged with Large intestine. ...
In anatomy of the digestive system, the colon or large intestine or large bowel is the part of the intestine from the cecum to the rectum. ...
A colic flexure is a flexure (a bend) in the colon. ...
In anatomy of the digestive system, the colon is the part of the intestine from the cecum to the rectum. ...
Grays Fig. ...
The Descending Colon passes downward through the left hypochondriac and lumbar regions along the lateral border of the left kidney. ...
The sigmoid colon is the part of the large intestine after the descending colon and before the rectum. ...
The Taenia Coli are three separate longitudinal ribbons of smooth muscle on the outside of the ascending, transverse, descending and sigmoid colons. ...
The haustra of the colon are the small pouches caused by sacculation, which give the colon its segmented appearance. ...
The epiploic appendices (or epiploic appendages) are small pouches of the peritoneum filled with fat and situated along the colon and upper part of the rectum. ...
The rectum (from the Latin rectum intestinum, meaning straight intestine) is the final straight portion of the large intestine in some mammals, and the gut in others, terminating in the anus. ...
Although the term rectum means straight, the human rectum is not. ...
The rectum is about 12 cm. ...
The pectinate line (anocutaneous line, dentate line, anal verge, anorectal junction) is a line which marks the end of the rectum and the beginning of the anal canal. ...
The anal canal is the terminal part of the large intestine. ...
The rectal sinuses, end in small valve-like folds, termed anal valves, which join together the lower ends of the rectal columns. ...
The rectal columns are separated from one another by furrows, or rectal sinuses, which end below in small valve-like folds, termed anal valves. ...
The lumen of the anal canal presents, in its upper half, a number of vertical folds, produced by an infolding of the mucous membrane and some of the muscular tissue. ...
Anus: Sphincter ani internus muscle • Sphincter ani externus muscle | | | Lower GI: lymph | | | This article is about the bodily orifice. ...
The Sphincter ani internus muscle is a muscle of the human body. ...
The Sphincter ani externus muscle is a muscle of the human body. ...
Overview About 70% of the bodys immune system is found in the digestive tract. ...
Peyers patches are secondary lymphoid organs, named after the 17th-century Swiss anatomist Johann Conrad Peyer. ...
M cells (or Microfold cells) are cells found in the follicle-associated epithelium of the Peyers patch that have the unique ability to sample antigen from the lumen of the small intestine and deliver it via transcytosis to antigen presenting cells and lymphocytes located in a unique pocket-like...
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