MCQ Physiology Answer 27
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Food remains in the large intestine for days. Dwell time in the small intestine is short (87 min).
The transverse colon is involved in the storage and dehydration of feces. It is divided into compartments, called haustra, by ringlike contractions of smooth muscle. In this region, largely stationary movements, called haustration, help in water absorption. Mass movements normally begin in the middle of the transverse colon preceded by relaxation of circular muscles and downstream haustra.
Remnants of meals reside in the small intestine for 3-4 days. Page 18.
Receptive relaxation allows the ascending colon to accept chyme without significantly increasing the pressure, not the transverse colon.
Tags: MCQ, Physiology, GIT
Category: Physiology MCQs
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