There are four basic layers of the digestive tract. Arrange them in order from the lumen (deep to superficial).
A) serosa, mucosa, submucosa, and muscularis externa
B) muscularis externa, serosa, mucosa, and submucosa
C) mucosa, submucosa, muscularis externa, and serosa
D) submucosa, serosa, muscularis externa, and mucosa

Question

Quizplus · Accepted Answer

The mucosa is the innermost layer, followed by the submucosa, muscularis externa, and serosa. This arrangement allows for the movement of contents through the digestive tract, protection of the structures, and regulation of digestive processes.

There Are Four Basic Layers of the Digestive Tract