Multiple Choice
Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?
A) The first phase of swallowing is under involuntary control.
B) The second phase of swallowing is under voluntary control.
C) The first phase of swallowing is under voluntary control.
D) The second phase of swallowing is under involuntary control.
Correct Answer:
Verified
Correct Answer:
Verified
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