Question

What is the innermost layer of small intestine called ?

Answer 1

 the innermost layer is the mucosa, underneath this is the submucosa, followed by the muscularis propria and finally, the outermost layer - the adventitia. The structure of these layers varies, in different regions of the digestive system, depending on their function.

Answer 2

The innermost layer of small intestine is called plicae circulares which is a layer of epithelial cells along with foldings called as villi for the purpose of absorption .