MICROANATOMY

DIGESTIVE SYSTEM

GI TRACT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The four layers are Mucosa, Submucosa, Muscularis Externa and Lymphoid Tissue
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The organs of the GI tract are made from four layers, the inner lining or mucosa, the submucosa containing blood vessels and lymphatics, the muscularis externa or smooth muscle layer, and the outermost layer or serosa/adventitia.

Detailed explanation-2: -In the stomach, muscularis mucosa is composed of two thin layers of smooth muscles arranged as inner circular and outer longitudinal layer. The muscularis externa is three layered thick as outer longitudinal, middle circular and inner oblique layer and are oriented more randomly than layered [2].

There is 1 question to complete.