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MidgutInverted V-shaped sigmoid colonRectumMesocolonProximalRectalArteriesMesenteric veinArterial supplyIntestineMuscularAbdominal cavityHepatic flexureAppendixIleocecalBranchesSuperiorPeritoneumSplenic flexureAnteriorlyAnatomyLeft colonStomachAbdomenRight colonLowerContinuousSmallLiesContinuesEntire lengthPatternMain
Midgut10
  • The alimentary tube is divided into foregut, midgut, and hindgut. (medscape.com)
  • 2 The developing gastrointestinal tract, or primitive gut, is often divided into the foregut, midgut, and hindgut. (clinicalgate.com)
  • The midgut gives rise to the distal half of the duodenum, jejunum, ileum, cecum, appendix, ascending colon, and the right two thirds of the transverse colon. (clinicalgate.com)
  • Each arises from the front of the aorta and supplies the abdominal midgut and the hindgut and their derivatives respectively. (learnsurgeryonline.com)
  • The large intestine develops partly from the midgut (from cecum to distal transverse colon), the hindgut (from distal transverse colon to dentate line in anorectum), and proctodeum (below the dentate line). (medscape.com)
  • The aim of the present study was to observe the morphology of the enteric neurons in the human fetal colon and compare the findings in ascending colon a midgut derivative and descending colon a hindgut derivative at various weeks of gestation (WG). (bvsalud.org)
  • The "watershed" area between these two blood supplies, which represents the embryologic division between the midgut and hindgut, is an area sensitive to ischemia. (wikidoc.org)
  • On embryologic grounds, the GI tract should be divided into upper (mouth to major papilla in the duodenum), middle (duodenal papilla to midtransverse colon), and lower (mid-transverse colon to anus) according to the derivation of these 3 areas from the foregut, midgut, and hindgut, respectively. (medscape.com)
  • The tract may also be divided into foregut , midgut , and hindgut , reflecting the embryological origin of each segment of the tract. (wikidoc.org)
  • foregut , midgut , and hindgut . (wikidoc.org)
Inverted V-shaped sigmoid colon2
Rectum16
  • The inferior mesenteric lymph nodes consist of: (a) small glands on the branches of the left colic and sigmoid arteries (b) a group in the sigmoid mesocolon, around the superior hemorrhoidal artery (c) a pararectal group in contact with the muscular coat of the rectum The inferior mesenteric lymph nodes are lymph nodes present throughout the hindgut. (wikipedia.org)
  • they receive lymph from the descending colon, sigmoid colon, and proximal part of the rectum. (wikipedia.org)
  • The rectum begins where the tinea coli of the sigmoid colon join to form a continuous outer longitudinal muscle layer at the level of the sacral promontory. (tandf.co.uk)
  • The embryological hindgut forms the upper rectum, while the lower rectum is derived from the cloaca and is surrounded by extraperitoneal connective tissue. (tandf.co.uk)
  • The superior rectal artery is the direct continuation of the inferior mesenteric artery and is the main arterial supply of the rectum. (tandf.co.uk)
  • Guidelines on the management of cancers of the colon, rectum and anus as published by the Association of Coloproctology of Great Britain and Ireland (ACPGBI) in 2017. (tandf.co.uk)
  • The hindgut gives rise to the left two thirds of the transverse colon, descending colon, sigmoid colon, and rectum. (clinicalgate.com)
  • The sigmoid colon lies in the left iliac region and extends from the pelvic brim to the front of the third sacral segment where it becomes continuous with the rectum. (learnsurgeryonline.com)
  • Lymphatic drainage from the entire colon and proximal two-thirds of the rectum is to the paraortic nodes that then drain into the cisterna chyli . (wikidoc.org)
  • The sigmoid colon is the part of the large intestine after the descending colon and before the rectum . (wikidoc.org)
  • The walls of the sigmoid colon are muscular, and contract to increase the pressure inside the colon, causing the stool to move into the rectum. (wikidoc.org)
  • Lymphatic drainage from the entire colon and proximal two-thirds of the rectum is to the paraaortic lymph nodes that then drain into the cisterna chyli. (rasoulazizi.com)
  • The function of the descending colon in the digestive system is to store food that will be emptied into the rectum. (rasoulazizi.com)
  • For the purposes of endoscopy, the upper GI tract includes the esophagus, stomach and duodenum (esophagogastroduodenoscopy [EGD] or upper GI endoscopy [UGIE]), and the lower GI tract includes the anus, rectum, colon, and cecum (anoproctocolonoscopy or lower GI endoscopy). (medscape.com)
  • The transverse colon and sigmoid colon have a mesentery, but the ascending colon, descending colon, and rectum are retroperitoneal, whereas the cecum borrows the mesentery of the ileum. (medscape.com)
  • In the colon, rectum, or anus. (brainscape.com)
Mesocolon5
  • The transverse colon extends from the hepatic flexure to the splenic flexure across the abdomen suspended by the transverse mesocolon. (learnsurgeryonline.com)
  • It is attached by the sigmoid mesocolon to the pelvic wall. (learnsurgeryonline.com)
  • Middle colic artery - passes upwards on the body of the pancreas to reach the transverse mesocolon within which it divides to supply the right two-thirds of the transverse colon. (learnsurgeryonline.com)
  • Sigmoid mesocolon, containing superior rectal vessels, has an inverted-V - shaped attachment to the posterior abdominal wall - the tip of the V lying on the pelvic brim over the left ureter. (medscape.com)
  • On the posterior side, the transverse colon is connected to the posterior abdominal wall by a mesentery known as the transverse mesocolon . (wikidoc.org)
Proximal3
  • The cecum, which is the proximal blind end (pouch) of the ascending (right) colon, is a blind cul-de-sac below the level of the ileocecal junction that lies in the right iliac fossa. (medscape.com)
  • The proximal two-thirds of the transverse colon is perfused by the middle colic artery , a branch of superior mesenteric artery , while the latter third is supplied by branches of the inferior mesenteric artery . (wikidoc.org)
  • The proximal two-thirds of the transverse colon is perfused by the middle colic artery, a branch of SMA, while the latter third is supplied by branches of the IMA. (rasoulazizi.com)
Rectal3
  • these unite to form the superior rectal vein, which later becomes the inferior mesenteric vein. (tandf.co.uk)
  • The arterial supply of the left colon - that is, the distal one third of the transverse colon, descending colon and sigmoid colon - is derived from the inferior mesenteric artery, through its left colic, sigmoid and superior rectal branches. (learnsurgeryonline.com)
  • and by the internal iliac artery through its middle rectal and inferior rectal branches. (medscape.com)
Arteries6
  • From the dorsal aorta, the three dominant vitelline arteries are further refined into the celiac trunk, superior mesenteric artery, and inferior mesenteric artery, which correspond to the three primitive gut regions, respectively. (clinicalgate.com)
  • The arterial supply of the large intestine is from the superior and inferior mesenteric arteries. (learnsurgeryonline.com)
  • It supplies the ascending colon and anastomoses with the ileocolic and middle colic arteries. (learnsurgeryonline.com)
  • Arterial supply to the colon comes from branches of the superior and inferior mesenteric arteries. (wikidoc.org)
  • The sigmoid colon is supplied with blood from several branches (usually between 2 and 6) of the sigmoid arteries , a branch of the IMA. (wikidoc.org)
  • The terminal branches of these arteries entering the wall of the colon are called vasa recta. (medscape.com)
Mesenteric vein1
  • Venous drainage usually mirrors colonic arterial supply, with the inferior mesenteric vein draining into the splenic vein , and the superior mesenteric vein joining the splenic vein to form the portal vein that then enters the liver. (wikidoc.org)
Arterial supply2
  • The arterial supply of the right colon - that is, the caecum, ascending colon, hepatic flexure and right third or half of the transverse colon - is derived from the superior mesenteric artery, through its ileocolic, right colic and middle colic branches. (learnsurgeryonline.com)
  • Arterial supply of the ascending colon comes from the ileocolic artery and right colic artery , both branches of the SMA. (wikidoc.org)
Intestine6
  • The peritoneal surfaces of the ascending colon are in contact with loops of small intestine. (learnsurgeryonline.com)
  • Posteriorly the sigmoid colon lies on the left ureter and common iliac vessels, superiorly it is covered by coils of small intestine and inferiorly it lies on the bladder in males or the uterus and bladder in females. (learnsurgeryonline.com)
  • The cecum (the widest part of large intestine) leads to the ascending (right) colon, which ascends vertically from right iliac fossa through the right lumbar region into right hypochondrium under the liver. (medscape.com)
  • In the anatomy of the digestive system , the colon is another name for the large intestine . (wikidoc.org)
  • Unlike the small intestine, the colon does not play a major role in absorption of foods and nutrients. (rasoulazizi.com)
  • Because the taenia coli is shorter than the intestine, the colon becomes sacculated between the taenia, forming the haustra. (rasoulazizi.com)
Muscular2
  • The cecum and colon have 3 longitudinal muscular bands called tenia and multiple sacculations called haustra. (medscape.com)
  • Looking at an inferior view of the thoracoabdominal diaphragm, it is apparent that the central part of the diaphragm is tendinous, while its outer edges are muscular. (pressbooks.network)
Abdominal cavity3
  • The location of the parts of the colon are either in the abdominal cavity or behind it in the retroperitoneum. (wikidoc.org)
  • The cecum leads to the ascending (right) colon, which lies vertically in the most lateral part of the abdominal cavity. (medscape.com)
  • The transverse colon takes a right-angle turn just below the spleen (the left colic or splenic flexure) and becomes the descending (left) colon, which lies vertically in the most lateral part of the abdominal cavity. (medscape.com)
Hepatic flexure3
  • The ascending colon extends from the ileocaecal valve to the undersurface of the right lobe of the liver, where it turns medially, forming the hepatic flexure. (learnsurgeryonline.com)
  • It is the part of the colon from the cecum to the hepatic flexure (the turn of the colon by the liver). (wikidoc.org)
  • The ascending colon takes a right-angle turn just below the liver (the right colic or hepatic flexure) and becomes the transverse colon, which takes a horizontal course from right to left. (medscape.com)
Appendix1
  • The appendix also opens in the cecum at an opening that is usually situated at the bottom, inferior to the ileocecal opening. (medscape.com)
Ileocecal2
  • There are several peritoneal fossae (eg, superior and inferior ileocecal, subcecal, retrocecal) around the cecum, which can be sites of internal herniation of the small bowel. (medscape.com)
  • It is the blind end (pouch) of the ascending (right) colon, which lies below the ileocecal junction (opening). (medscape.com)
Branches1
  • rterial supply to the colon comes from branches of the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA). (rasoulazizi.com)
Superior2
  • The superior mesenteric artery usually arises anterior to L1 and the inferior mesenteric artery arises anterior to L3. (clinicalgate.com)
  • In one of the left sided specimens, inferior gluteal nerve had an abnormal course, piercing superior belly of piriformis muscle instead of emerging through the lower border of it along with variation of the sciatic nerve. (bvsalud.org)
Peritoneum2
  • Peritoneum covers it anteriorly and on both sides, fixing the ascending colon to the posterior abdominal wall thus forming a paracolic gutter to its right. (learnsurgeryonline.com)
  • The transverse colon is encased in peritoneum , and is therefore mobile (unlike the parts of the colon immediately before and after it). (wikidoc.org)
Splenic flexure2
Anteriorly1
  • In the ascending and descending colon, they are present anteriorly and on posterolateral and posteromedial aspects. (medscape.com)
Anatomy1
  • During routine educational dissection of the lower limb, bilateral gluteal regions in fifteen cadavers (30 gluteal regions) focusing on the variations of inferior gluteal nerve and sciatic nerve with respect to piriformis muscle were observed in the department of anatomy, All India Institute of Medical Sciences, New Delhi, India. (bvsalud.org)
Left colon2
  • It then takes a right turn again and descends vertically through the left lumbar region to the left iliac fossa as the descending (left) colon. (medscape.com)
  • The remainder is known as the left colon. (wikidoc.org)
Stomach4
  • The transverse colon is related anterosuperiorly to the liver, gallbladder, stomach, greater omentum and spleen. (learnsurgeryonline.com)
  • Two layers go down from stomach and then run upward to be attached to the transverse colon. (medscape.com)
  • The transverse colon hangs off the stomach , attached to it by a wide band of tissue called the greater omentum . (wikidoc.org)
  • Components derived from the gut proper, including the stomach and colon , develop as swellings or dilatations of the primitive gut. (wikidoc.org)
Abdomen1
  • The ascending colon, on the right side of the abdomen, is about 12.5 cm long. (wikidoc.org)
Right colon1
Lower3
  • Posteriorly the descending colon lies on the lower pole of the left kidney and the diaphragm, quadratus lumborum, iliacus and psoas. (learnsurgeryonline.com)
  • Under its lower border sciatic nerve and inferior gluteal nerves exit. (bvsalud.org)
  • The left lower quadrant contains the sigmoid colon. (pressbooks.network)
Continuous1
Small2
  • however, if the obstruction is complete (distended small bowel and collapsed colon), and the patient complains of abdominal pain, intestinal viability is threatened. (medscape.com)
  • The haustra of the colon are the small pouches caused by sacculation, which give the colon its segmented appearance. (rasoulazizi.com)
Lies1
  • The amygdala area lies in the roof of the inferior horn between the rostral end of the horn and the basal ganglia. (ehd.org)
Continues1
  • It then takes a right turn and continues as the horizontally placed transverse colon, which reaches across the epigastrium to the left hypochondrium under the spleen. (medscape.com)
Entire length1
  • Flow between these two systems communicates via a "marginal artery" that runs parallel to the colon for its entire length. (wikidoc.org)
Pattern1
  • The primordial hippocampus dorsal to the choroid fissure follows the same growth pattern lying first in the medial wall of the inferior horn, then in the floor. (ehd.org)
Main1