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The paramesenteric gutters (paramesenteric recesses or infracolic spaces) are two peritoneal recesses – spaces in the abdominal cavity between the colon and the root of the mesentery. There are two paramesenteric gutters; the left paramesenteric gutter and the right paramesenteric gutter.
This division creates an upper and a lower compartment within the greater sac, named the supracolic and infracolic compartment respectively, each housing different organs and structures of the abdominal cavity. [3] [4] The liver, spleen, stomach, and lesser omentum are
The transpyloric plane is clinically notable because it passes through several important abdominal structures. It also divides the supracolic and infracolic compartments, with the liver, spleen and gastric fundus above it and the small intestine and colon below it. [2]
Bile, pus, or blood released from viscera anywhere along its length may run along the paracolic gutter, and collect in sites quite remote from the organ of origin. [2] In supine patients, infected fluid from the right iliac fossa may ascend in the paracolic gutter to enter the lesser sac.
The lesser omentum (small omentum or gastrohepatic omentum) is the double layer of peritoneum that extends from the liver to the lesser curvature of the stomach, and to the first part of the duodenum.
The lesser sac, also known as the omental bursa, is a part of the peritoneal cavity 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.
Claude Bernard, French physician who introduced the concept of homeostasis. The human body and even its individual body fluids may be conceptually divided into various fluid compartments, which, although not literally anatomic compartments, do represent a real division in terms of how portions of the body's water, solutes, and suspended elements are segregated.
The greater omentum (also the great omentum, omentum majus, gastrocolic omentum, epiploon, or, especially in non-human animals, caul) is a large apron-like fold of visceral peritoneum that hangs down from the stomach.