Which Statement Describes the Muscular Contractions of the GI Tract

question 53

Multiple Choice

Which statement describes the muscular contractions of the GI tract? ​

• A)Peristalsis begins in the stomach upon the initiation of the swallowing reflex.
• B)To withstand the pressure of stool evacuation, the colon must have the thickest and strongest muscles of the GI tract.
• C)The jejunum has a third layer of diagonal muscles to enhance contraction and relaxation phases for optimal digestion.
• D)The periodic contractions of intestinal muscles mix the chyme before allowing the contents to move toward the colon.

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