Overview of the Greater Omentum (preview) - Human Anatomy | Kenhub

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The largest fold of visceral peritoneum in the abdominal cavity is the greater omentum. This structure is also known as the “epiploon” which is derived from the Greek word "epipleo" - meaning floating on the surface of something. In this case, it’s the surface of the intestines.

The greater omentum is a large apron-like fold of visceral peritoneum that hangs inferiorly from the greater curvature of the stomach. An important thing to remember is that the greater omentum is considered a double sheet as in two sheets that are folded back on each other. So, if you look at it side on in the sagittal plane, it would appear similar to the letter U.

Each sheet consists of two layers of peritoneum. Therefore, the greater omentum has four layers in total. An interesting fact about the greater omentum is that it often adheres to inflamed visceral organs within the abdomen which is thought to limit the spread of infection. This is why it's commonly called the policeman of the abdomen.

The anterior sheet of the greater omentum originates from the stomach and passes inferiorly before it folds upon itself to form the posterior sheet. The posterior sheet then passes superiorly to attach to the structure here – the transverse colon.

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Read more on the greater omentum in this free article. In it, we explore the anatomy of the peritoneum - including, of course, the greater omentum! https://khub.me/wmj21

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