Corpus: Transverse mesocolon
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English:
Definition[Bearbeiten]
The mesocolon transversum is the mesentery of the transverse colon.
Anatomy[Bearbeiten]
Three ligaments radiate into the transverse mesocolon - the hepatocolic ligament, the gastrocolic ligament and the phrenicocolic ligament.
Together with the gastrocolic ligament, the transverse mesocolon forms the inferior recess of the omental bursa. The root of the transverse mesocolon begins slightly caudal to the point where the duodenum disappears retroperitoneally and runs from there to the left to the left kidney.
The middle colic artery and the middle colic vein run through the transverse mesocolon.
Topographical anatomy[Bearbeiten]
The transverse mesocolon is considered a reference structure in the categorisation of the organs of the abdominal and pelvic cavities. It separates the epigastrium (upper abdomen), which is localised above the mesocolon transversum, from the hypogastrium (lower abdomen). In its course it crosses the duodenum.
Embryology[Bearbeiten]
Like the greater omentum, the transverse mesocolon develops from the dorsal mesogastrium.