Asked by Benjamin Wolfe on May 25, 2024
Verified
There are four basic layers of the digestive tract. Arrange them in order from the lumen (deep to superficial) .
A) submucosa, serosa, muscularis externa, and mucosa
B) mucosa, submucosa, muscularis externa, and serosa
C) muscularis externa, serosa, mucosa, and submucosa
D) serosa, mucosa, submucosa, and muscularis externa
Muscularis Externa
A layer of muscle in the walls of various organs, including the stomach and intestines, responsible for movement.
Submucosa
Layer of tissue in the digestive tract lying just beneath the mucosa, containing blood vessels, nerves, and glands.
Serosa
Another term for serous membrane, the smooth tissue lining certain internal cavities of the body.
- Understand the layers of the gastrointestinal (GI) tract and their arrangement.
Verified Answer
VG
Vaishnavi GunturuMay 28, 2024
Final Answer :
B
Explanation :
The four basic layers of the digestive tract are arranged in order from lumen (deep to superficial) as mucosa, submucosa, muscularis externa, and serosa.
Learning Objectives
- Understand the layers of the gastrointestinal (GI) tract and their arrangement.