Name the four layers of the digestive tract beginning from the lumen of the digestive tract.
A)serosa,muscular layer,submucosa,mucosa
B)mucosa,submucosa,muscular layer,serosa
C)submucosa,mucosa,serosa,muscular layer
D)mucosa,submucosa,serosa,muscular layer
E)muscular layer,serosa,submucosa,mucosa

Question

Quizplus · Accepted Answer

The four layers of the digestive tract beginning from the lumen of the digestive tract are as follows:
1. Mucosa: The innermost layer which secretes digestive enzymes and absorbs nutrients.
2. Submucosa: Layer containing blood vessels, lymphatics, and nerves.
3. Muscular layer: Made up of smooth muscle that contracts to move food along the digestive tract.
4. Serosa: The outermost layer which provides a protective covering for the digestive tract. 
So, option B is the correct answer as it mentions the correct sequence of these layers.

Name the Four Layers of the Digestive Tract Beginning from the Lumen