What is the greater peritoneal sac?
What is the greater peritoneal sac?
In human anatomy, the greater sac, also known as the general cavity (of the abdomen) or peritoneum of the peritoneal cavity proper, is the cavity in the abdomen that is inside the peritoneum but outside the lesser sac.
What is lesser sac and greater sac?
The lesser sac, also known as the omental bursa, is the cavity in the abdomen that is formed by the lesser and greater omentum. Usually found in mammals, it is connected with the greater sac via the omental foramen or Foramen of Winslow….
| Lesser sac | |
|---|---|
| TA2 | 3703 |
| FMA | 19800 |
| Anatomical terminology |
How would you describe the greater omentum?
The greater omentum (or omentum majus), as its name suggests, is the largest of the two omenta. It is an apron like structure that extends from the greater curvature of the stomach and proximal duodenum. From here, it descends inferiorly over the transverse colon, jejunum and ileum.
What purpose does the greater omentum serve?
What purpose does the greater omentum serve? The greater omentum helps prevent the parietal peritoneum, which lines the peritoneal cavity, from adhering to the visceral peritoneum, which lines the peritoneal organs.
What is the lesser sac?
The omental bursa or lesser sac is a hollow space that is formed by the greater and lesser omentum and its adjacent organs. It communicates with the greater sac via the epiploic foramen of winslow, which is known as the general cavity of the abdomen that sits within the peritoneum, but outside the lesser sac.
Is the greater sac posterior to the stomach?
Greater sac The supracolic compartment is found anterior and superior to the transverse mesocolon, and contains the liver, stomach and spleen. Learn more about the anatomy of the digestive system with our quizzes and free learning tools. The infracolic compartment is posterior and inferior to the transverse mesocolon.
What does the lesser sac contain?
The lesser sac (omental bursa) is bordered anteriorly to the right by the lesser omentum, which conveys the common bile duct, hepatic artery, portal vein, and gastric vessels. The left borders include the gastrosplenic ligament (with short gastric vessels) and the splenorenal ligament (with splenic vessels).
What is the greater omentum made of?
The greater omentum is a thin double peritoneal mesothelial sheet composed of connective tissue and streaks of fat that surround fine arteries and a rich lymphatic network.
How does greater omentum prevent infection?
Although it is primarily an adipose tissue, the omentum also contains lymphoid aggregates, called milky spots (MS), that contribute to peritoneal immunity by collecting antigens, particulates and pathogens from the peritoneal cavity and, depending on the stimuli, promoting a variety of immune responses, including …
What is in the lesser sac of the peritoneum?
The lesser omentum is composed of two peritoneal ligaments that extend from the lesser curvature of the stomach and duodenal bulb to the liver, the gastrohepatic, and hepatoduodenal ligaments, respectively.
Where is the greater omentum attached?
On the front, the greater omentum hangs free, in front of the coils of small intestine. On the back, it’s attached to the front of the transverse colon. The part of the greater omentum between the stomach and the transverse colon is called the gastro-colic ligament.
