Why does the upper third of the esophagus have skeletal muscle in its wall?
A)so you do not choke
B)the first phase of swallowing is voluntary
C)so that peristalsis can occur
D)the first phase of swallowing is involuntary

Question

Quizplus · Accepted Answer

The upper third of the esophagus has skeletal muscle in its wall because the first phase of swallowing is voluntary. The skeletal muscles are under conscious control, allowing us to choose when to initiate the swallowing reflex.

Why Does the Upper Third of the Esophagus Have Skeletal