What is the thin layer of smooth muscle cells whose contraction stirs the lumenal contents and promotes contact with the mucosal membrane?
A) muscularis internae
B) muscularis mucosae
C) serosa
D) myenteric plexus
E) muscularis externae

Question

Quizplus · Accepted Answer

The muscularis mucosae is a thin layer of smooth muscle found in various parts of the gastrointestinal tract. Its contraction helps in the movement of the mucosal surface, thereby facilitating the exposure of the lumenal contents to the mucosal membrane for absorption and secretion.

What Is the Thin Layer of Smooth Muscle Cells Whose