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The Internal Anal Sphincter Is Characterized by _______________________

Question 19

Multiple Choice

The internal anal sphincter is characterized by _______________________.


A) Smooth muscle that encircles the top end of the anal canal
B) Skeletal muscle that encircles the top end of the anal canal
C) Smooth muscle that encircles the lower end of the anal canal
D) Skeletal muscle that encircles the lower end of the anal canal

Correct Answer:

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