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Greater omentum

Learning objectives

This study unit will help you:

  1. Learn about the peritoneum and its folds.
  2. Learn about the structure and functions of the greater omentum.
  3. Identify the organs that are related to the greater omentum.

Watch videos

The peritoneum is a continuous two-layered serous membrane composed of a parietal and a visceral layer. The omenta are fused peritoneal folds that connect the intraperitoneal organs to each other. The greater omentum is the largest, apron-like peritoneal fold which extends from the greater curvature of the stomach and duodenum to the posterior abdominal wall. The greater omentum is a site of fat deposition and functions to protect the abdominal organs by cushioning them and activating the immune response, as well as contributing to reparative processes.

This video tutorial will provide you with a comprehensive overview of the greater omentum and its functions.

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Now that you have watched the video about the greater omentum, you can test what you have learned with our specially designed quiz.

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Browse atlas

Take a look at each structure individually with our image gallery: 

Key points about the greater omentum
Definition The greater omentum is the largest peritoneal fold located in the abdominal cavity.
Blood supply Right gastroomental artery, left gastroomental artery
Venous drainage Right gastroomental vein, left gastroomental vein
Related organs Stomach, duodenum, colon, jejunum, ileum
Function Site of fat deposition, protection, reparation

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