They will be explained on this page. Mesenteries, peritoneal ligaments, omenta and more peritoneal terminology Balloon dog: different names for the parts, same balloon. This article discusses the peritoneal terminology in detail.
This leads to a subtle effect in its usage: if someone speaks about the mesentery without specifying a part of the intestines , the specific mesentery to the jejunum and ileum is meant, whereas if someone speaks about a mesentery, this may refer to any of the mesenteries.
Examples: Latin term English equivalent Connects Lig. Liver Gr: hepar and duodenum Lig. Spleen and kidney Lat: renis Lig. Liver and abdominal wall Lat: falx:crescent Lig. Omenta An omentum is a double or multiple layer of peritoneum from the stomach or the proximal part of the duodenum to adjacent abdominal organs. There are only two of them: Latin term English equivalent Connects Omentum minus Lesser omentum From stomach and proximal duodenum to the liver Omentum majus Greater omentum From stomach and proximal duodenum to the transverse colon and transverse mesocolon, and hangs down freely from the transverse mesocolon anterior of the intestines.
Finally: be aware of a potential confusion! Traditionally anatomic, the location of structures surrounded by peritoneum is named 'intraperitoneal' and the potential space inside the peritoneum 'balloon' is named ' inside the peritoneal cavity '. The latter location clinically is also often named intraperitoneal , for instance in an 'intraperitoneal injection'.
Physically this makes sense, but as the term 'intraperitoneal' is historically grown to mean ' largely surrounded by peritoneum' we'll have to stick to that. The only way to deal with this potential confusion is to be aware of it and to always ask yourself which 'intraperitoneal' is meant: the tradional anatomic or the clinical? Previous Next. The mesentery is found in your abdomen , where it surrounds your intestines. It comes from the area on the back side of your abdomen where your aorta branches off to another large artery called the superior mesenteric artery.
The portion of the dorsal mesentery that attaches to the greater curvature of the stomach, is known as the dorsal mesogastrium. The part of the dorsal mesentery that suspends the colon is termed the mesocolon. The dorsal mesogastrium develops into the greater omentum. This decreases the friction between the adjacent visceral surfaces and allows some movement of the organs that occur during digestion. The mesentery attaches the intestines to the abdominal wall, and also helps storing the fat and allows the blood and lymph vessels, as well as the nerves, to supply the intestines.
Asked by: Xiuzhu Viscarret asked in category: General Last Updated: 13th February, What's the difference between mesentery and omentum? However, the short answer is that mesentery is the support tissue that the intestine is rooted into, and the omentum is a fatty blanket that hangs down in front of all of the intestines.
This "drape" is called the mesentery. It's a sheet of fat and connective tissue with arteries inside. Can the omentum be removed? An omentectomy is a surgical procedure designed to remove the omentum, which is a thin fold of abdominal tissue that encases the stomach, large intestine and other abdominal organs.
A total or supracolic omentectomy — A surgeon completely removes the omentum. What does omentum look like? The omentum is a two-layered structure that is like a parachute, covering and surrounding the organs of the abdominal cavity. Its consistency is somewhere between that of lumpy linen and jello. The omentum is broken down into two parts, which in adults are mostly fused together. What organs does the greater omentum attach to? The greater omentum attaches the stomach to the transverse colon.
This is the key difference between the omentum and the mesentery. Overview and Key Difference 2. What is Omentum 3. What is Mesentery 4. Similarities Between Omentum and Mesentery 5. The omentum is termed as a layer of the peritoneum, which is a serous membrane lining the abdominal cavity and that surrounds the organs of the abdomen. The omentum could be categorized into two parts; the greater omentum and the lesser omentum.
The greater omentum is considered as the largest of the peritoneal folds that are present in the body. It is a thin layer and perforated in its typical appearance and in the context of obese people, the greater omentum contains an accumulated adipose tissue.
Greater omentum is composed double folded peritoneum so that it appears as four layers. These layers of the greater omentum start from the region of the duodenum and the greater curvature of the stomach , extending towards the small intestines and sometimes they could be extended even up to the pelvis region.
These two layers then turn on themselves, which results in four layers and covers up to the level of the transverse colon. At this point, the layers are separated and could be identified as single layers of the peritoneum in young individuals. But when it comes to adults, these layers are not recognized as individual layers since they are blended together in an inseparable aspect.
The left and the right border of the greater omentum are continuous with the beginning of the duodenum and the gastrosplenic ligament respectively. The lesser omentum is also a double layered peritoneum that is extremely thin. The two-layered lesser omentum extends from the lesser curvature of the stomach anterosuperior and posteroinferior surfaces and the beginning of the duodenum.
Once these two layers reach the regions of the upper border of the duodenum and the lesser curvature of the stomach, they are combined together and is ascended towards the porta hepatis; the transverse fissure of the liver as double folded structure.
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