NationMaster - Encyclopedia: Greater omentum

The greater omentum (great omentum; gastrocolic omentum; epiploon) is a large fold of peritoneum that hangs down from the stomach, and extends from the stomach to the transverse colon. Image File history File links Gray1035. ... In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... Image File history File links No higher resolution available. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... This article or section is in need of attention from an expert on the subject. ... The portion of this mesentery attached to the greater curvature of the stomach is named the dorsal mesentery (or dorsal mesogastrium, when referring to the portion at the stomach), and the part which suspends the colon is termed the mesocolon. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... It has been suggested that some sections of this article be split into a new article entitled Human stomach. ... In anatomy of the digestive system, the colon is the part of the intestine from the cecum to the rectum. ...

Structure

The greater omentum is the largest peritoneal fold. It consists of a double sheet of peritoneum, folded on itself so that it is made up of four layers. itis the part where the digestion hapens and where oou can find the part of the mnouse the cat ate! it is the coolest part ofthe cat In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ...

The two layers which descend from the stomach and commencement of the duodenum pass in front of the small intestines, sometimes as low down as the pelvis; they then turn upon themselves, and ascend again as far as the transverse colon, where they separate and enclose that part of the intestine. In anatomy of the digestive system, the duodenum is a hollow jointed tube connecting the stomach to the jejunum. ... In biology the small intestine is the part of the gastrointestinal tract (gut) between the stomach and the large intestine. ... The pelvis (pl. ... In anatomy of the digestive system, the colon is the part of the intestine from the cecum to the rectum. ...

These individual layers may be easily demonstrated in the young subject, but in the adult they are more or less inseparably blended.

The left border of the greater omentum is continuous with the gastrolienal ligament; its right border extends as far as the commencement of the duodenum. The spleen is almost entirely surrounded by peritoneum, which is firmly adherent to its capsule. ... In anatomy of the digestive system, the duodenum is a hollow jointed tube connecting the stomach to the jejunum. ...

The greater omentum is usually thin, presents a cribriform appearance, and always contains some adipose tissue, which in obese people accumulates in considerable quantity. Cribriform (Latin for perforated) can refer to: Cribriform plate Fascia cribrosa Category: ... It has been suggested that Subcutaneous fat be merged into this article or section. ...

Between its two anterior layers, a short distance from the greater curvature of the stomach, is the anastomosis between the right and left gastroepiploic vessels. An anastomosis (plural anastomoses) refers to a form of network in which streams both branch out and reconnect. ... Branches of the celiac artery. ...

Subdivisions

The greater omentum is often defined to encompass a variety of structures, and can thus be subdivided into the following:

fuck this website and whoever wrote it The postero-inferior surface of the stomach is covered by peritoneum, except over a small area close to the cardiac orifice; this area is limited by the lines of attachment of the gastrophrenic ligament, and lies in apposition with the diaphragm, and frequently with the upper portion of the left... The gastrosplenic ligament is Part of the greater omentum; embryonically the gastrosplenic ligament is derived from the dorsal mesogastrium; it may also be know as the gastrolienal ligament. ... The splenorenal ligament (or lienorenal ligament, or phrenicolienal ligament in older texts), is derived from the peritoneum, where the wall of the general peritoneal cavity comes into contact with the omental bursa between the left kidney and the spleen; the lienal vessels pass between its two layers. ... A fold of peritoneum, the phrenicocolic ligament, is continued from the left colic flexure to the diaphragm opposite the tenth and eleventh ribs; it passes below and serves to support the spleen, and therefore has received the name of sustentaculum lienis. ...

Development

The greater omentum develops from the dorsal mesentery that connects the stomach to the posterior abdominal wall. During stomach development, the stomach undergoes its first 90° rotation along the axis of the embryo, so that posterior structures are moved to the left and structures anterior to the stomach are shifted to the right. As a result, the dorsal mesentery folds over on itself, forming a pouch with its blind end on the left side of the embryo. A second approximately 90° rotation of the stomach, this time in the frontal plane, moves structures inferior if they were originally to the left of the stomach, and superior if they were originally to the stomach's right. Consequently, the blind-ended sac (also called the lesser sac) formed by the dorsal mesentery is brought inferiorly, where it assumes its final position as the greater omentum. It grows to the point that it covers the majority of the small and large intestine. The portion of this mesentery attached to the greater curvature of the stomach is named the dorsal mesentery (or dorsal mesogastrium, when referring to the portion at the stomach), and the part which suspends the colon is termed the mesocolon. ... It has been suggested that some sections of this article be split into a new article entitled Human stomach. ... It has been suggested that Human Anatomical Terms be merged into this article or section. ... The lesser sac, also known as the omental bursa, is the cavity in the abdomen that is formed by the lesser and greater omentum. ...

Additional images

See also

In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... The right gastroepiploic vein (right gastroomental vein) receives branches from the greater omentum and from the lower parts of the antero-superior and posteroinferior surfaces of the stomach; it runs from left to right along the greater curvature of the stomach between the two layers of the greater omentum. ... In radiology, omental cake is a term used to describe the thickened appearance of the greater omentum when it has been infiltrated by metastatic tumours. ...

External links

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Peritoneal ligaments

greater omentum (gastrosplenic ligament, gastrophrenic ligament, gastrocolic ligament, splenorenal ligament), lesser omentum (hepatogastric ligament, hepatoduodenal ligament) 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. ... 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. ... 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. ... Waynesburg College is located in the Pittsburgh suburb of Waynesburg. ... A ligament is a short band of tough fibrous connective tissue composed mainly of long, stringy collagen fibres. ... The gastrosplenic ligament is Part of the greater omentum; embryonically the gastrosplenic ligament is derived from the dorsal mesogastrium; it may also be know as the gastrolienal ligament. ... The postero-inferior surface of the stomach is covered by peritoneum, except over a small area close to the cardiac orifice; this area is limited by the lines of attachment of the gastrophrenic ligament, and lies in apposition with the diaphragm, and frequently with the upper portion of the left... The gastrocolic ligament is a portion of the greater omentum connecting to the transverse colon. ... The splenorenal ligament (or lienorenal ligament, or phrenicolienal ligament in older texts), is derived from the peritoneum, where the wall of the general peritoneal cavity comes into contact with the omental bursa between the left kidney and the spleen; the lienal vessels pass between its two layers. ... In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... The portion of the lesser omentum extending between the liver and stomach is termed the hepatogastric ligament. ... The portion of the lesser omentum extending between the liver and duodenum is the hepatoduodenal ligament. ...

falciform ligament, round ligament of liver, coronary ligament, ligamentum venosum, phrenicocolic ligament, left triangular ligament, right triangular ligament, broad ligament of the uterus, ovarian ligament, suspensory ligament of the ovary The falciform ligament is a broad and thin antero-posterior peritoneal fold, falciform in shape, its base being directed downward and backward, its apex upward and backward. ... For other structures with similar name, see round ligament. ... The coronary ligament consists of an upper and a lower layer. ... The ligamentum venosum is the fibrous remnant of the ductus venosus of the fetal circulation. ... A fold of peritoneum, the phrenicocolic ligament, is continued from the left colic flexure to the diaphragm opposite the tenth and eleventh ribs; it passes below and serves to support the spleen, and therefore has received the name of sustentaculum lienis. ... The left triangular ligament is a fold of some considerable size, which connects the posterior part of the upper surface of the left lobe to the diaphragm; its anterior layer is continuous with the left layer of the falciform ligament. ... The right triangular ligament is situated at the right extremity of the bare area, and is a small fold which passes to the diaphragm, being formed by the apposition of the upper and lower layers of the coronary ligament. ... The broad ligament of the uterus refers to the wide fold of peritoneum that connects the sides of the uterus to the walls and floor of the pelvis. ... The ovarian ligament (also called the utero-ovarian ligament or proper ovarian ligament) is a fibrous ligament that connects the ovary to the lateral surface of the uterus. ... The suspensory ligament of the ovary (also infundibulopelvic ligament) is a fold of peritoneum that surrounds the ovarian artery and vein as they extend out from the ovary. ...

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