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Question
which of the following is a feature of the muscular actions of digestion?
a.peristalsis begins first in the stomach upon the initiation of the swallowing reflex
b.the colon has the thickest and strongest muscles of the gi organs to withstand the pressure of stool evacuation
c.the jejunum has a third layer of diagonal muscles to enhance contraction and relaxation phases for enhanced digestion
d.segmentation in the intestines allows periodic squeezing along its length, resulting in momentary reversal of the movement of intestinal contents
Answer
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