What sphincter of the rectum is made of smooth muscle?
A) sigmoid sphincter
B) colonic sphincter
C) rectal sphincter
D) external anal sphincter
E) internal anal sphincter
Correct Answer:
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Q24: What must be combined with vitamin B₁₂
Q25: The small,fingerlike projection at the bottom of
Q26: A fourth,newly discover GI hormone is called:
A)glucose-dependent
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Q30: What causes the colon's main motility?
A)peristalsis
B)diffusion
C)smooth muscle
Q31: What vitamin is absorbed in the terminal
Q32: What are the three major GI hormones?
A)pepsin,gastrin,and
Q33: How are small peptides absorbed into intestinal
Q34: What is a typical outcome when feces
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