How many layers of smooth muscle are generally found in the muscularis layer of the digestive tract wall?
A) one
B) two
C) three
D) none
Correct Answer:
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A)incisors.
B)canines.
C)premolars.
D)last molars.
Q22: Which of the following is NOT a
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A)begin
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A)bolus.
B)rugae.
C)chyme.
D)peristalsis.
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