Contraction of smooth muscle in the ________ alters the shape of the intestinal lumen and moves the epithelial pleats and folds.
A) myenteric neural plexus
B) mucosa
C) submucosa
D) muscularis mucosa
E) mesocolon

Question

Quizplus · Accepted Answer

The contraction of smooth muscle in the muscularis mucosa alters the shape of the intestinal lumen and moves the epithelial pleats and folds. The myenteric neural plexus is responsible for regulating the contractions of smooth muscle in the muscularis externa, while the mucosa and submucosa layers do not directly control muscle contraction. The mesocolon is a fold of peritoneum that attaches the colon to the abdominal wall and does not play a role in muscular contractions.

Contraction of Smooth Muscle in the ________ Alters the Shape