Columnar epithelial cells.
The flap of tissue where the small intestine and large intestine join is called the ileocecal valve. It helps regulate the flow of digested food from the small intestine into the large intestine, preventing backflow.
spleen
The walls of the small intestine are covered in millions of tiny finger-like ... (it's a type of tissue), this tissue is adapted to help the small intestine carry out it's function...In what ways are the small intestine adapted for their roles
it is an organ!
Food enters the small intestine first. It enters the duodenum in the small intestine.
The small intestine is lined by simple columnar epithelium, which is NONCILIATED, which means it does not have Cilia on its surface. Instead it has Villis and Microvillis which help to absorb digested food
it is made of tissue and a storng mucle
The ileum refers to the last part of the small intestine, and is composed of many cells.
The structure found in the inner layer of the small intestine is called the villi. Villi are small finger-like projections that increase the surface area of the small intestine, aiding in the absorption of nutrients.
Sub mucosa
The first portion of the small intestine is a small curved portion called "duodenum".
small intestine digestion starts in the mouth then the pharynx, esophagus, stomach, small intestine, large intestine, then excreated through the rectum