How many organs does the human body have? The textbook answer is 78. But a new study by Irish medical experts upends this conventional wisdom because we have an undiscovered organ in our bodies– the mesentery. In 2016, the world's most famous medical textbook, Format Anatomy, also updated this latest definition. Recent studies have shown that the mesentery is an organ with independent anatomical and functional properties. The mesenteric membrane is a part of the suspension and fixation of the peritoneum of the intestinal tract, and the peritoneum born on the left and right sides of the body meets on the dorsal and ventral sides of the intestine, forming the dorsal mesenterium and the ventral mesenteric membrane, which can be divided into small mesentery, transverse mesocoleum, sigmoid mesenterium, right mesocole and mesenteric rectum.
MESENTAL CT presentation
Mesenteric root (orange). The mesentery of the small intestine has a "mesenteric root" at the beginning of the superior mesenteric artery (SMA, red arrow): the mesentery of the small intestine is fanned out of the root zone, and the SMA hangs it from the posterior abdominal wall to the end of the ileum.
Small mesenteric membrane (purple) containing branches of the superior mesenteric artery.
Ileoclinic part: the confluence of the mesenterium of the small intestine (purple) and the right mesenteric membrane (yellow) with the blood vessels of the ileum (blue arrow).
Confluence between the right mesenteric membrane (yellow) and the transverse mesenteric membrane (red).
Transverse mesorhes (red) and transverse colonic arteries (arrows).
The confluence of the left mesenteric membrane (blue) with the transverse mesenteric membrane (red). The mesentery of the small intestine (purple) and the small intestinal artery (purple arrow) and the left colon artery (blue arrow).
At the confluence of the sigmoid mesenteric membrane (green) with the left mesenteric membrane (blue), descending colon artery (blue arrow).
The confluence of the mesenteric membrane (pink) and the mesenteric sigmoid membrane (green). Sigmoid intestinal artery (green arrow).
Source: Image Time
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