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the peritoneal process attaching the colon to the posterior abdominal wall, and called ascending, descending, or transverse, according to the portion of the colon to which it attaches.
pelvic mesocolon (sigmoid mesocolon) the peritoneum attaching the sigmoid colon to the posterior abdominal wall.
Etymology: Gk, sigma + eidos + mesos, middle, kolon
a fold of peritoneum that connects the sigmoid colon with the pelvic wall, forming a curved line of attachment with the apex of the curve located at the division of the left common iliac artery. The fold is continuous with the iliac mesocolon and ends in the median plane over the rectum at the level of the third sacral vertebra. Between the two layers of the fold are the sigmoid and the superior rectal vessels. Compare mesentery proper, transverse mesocolon.
the mesentery that attaches the colon to the dorsal abdominal wall; it is called ascending, descending or transverse, according to the portion of the colon to which it attaches.
see mesocolon (above).
the peritoneum attaching the sigmoid colon to the dorsal abdominal wall. Called also sigmoid megacolon.
see pelvic megacolon (above).