How does the muscularis layer of the esophagus differ from the rest of the digestive tract?
A) It is all skeletal muscle.
B) The superior part is skeletal muscle.
C) The inferior part is skeletal muscle.
D) It has alternating smooth and skeletal muscle sections.

Question

Quizplus · Accepted Answer

The muscularis layer of the esophagus is unique because the superior part is composed of skeletal muscle, which allows for voluntary control of swallowing.

How Does the Muscularis Layer of the Esophagus Differ from the Rest