The Function of a Third, Obliquely-Oriented Layer of Smooth Muscle

question 16

Multiple Choice

The function of a third, obliquely-oriented layer of smooth muscle in the muscularis externa of the stomach is to .

• A) carry waves of contraction around the stomach
• B) churn, mix, and pummel the food contents to reduce them to small fragments
• C) squeeze the stomach to reduce its size after a meal has emptied from it
• D) allow stronger contractions than those occurring in other parts of the alimentary canal

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