The Layer of the Gastrointestinal Tract Wall That is Responsible

Question

The layer of the gastrointestinal tract wall that is responsible for motility is the
A) muscularis.
B) mucosa.
C) serosa.
D) submucosa.
E) glandular.

Accepted Answer

The muscularis layer of the gastrointestinal tract wall is responsible for motility, as it contains smooth muscle fibers that contract to move contents through the digestive system.