AN SC311- Final Exam Guide - Comprehensive Notes for the exam ( 28 pages long!)
29 Mar 2018
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No animal can breakdown cellulose on their own. Only the microbes can produce the enzymes needed to break down the cellulose. Most of digestion and absorption occurs in the small intestine. The reason for a single layer of cells is because it is easier and quicker to absorb things from the gi tract and move it into the body. Lymphatic is important in the villi for the movement of lipids from outside gi tract to inside the body. Nerves and blood supply are in the submucosa layer. These do the main job of taking in nutrients. Have a pocket of mucous that they build up and secrete. They can migrate up and become whatever cells are needed. Reach out between cells and sample what"s on the other side. Helps to make sure everything is what its supposed to be. Bring to the immune cells to see if they are dangerous and need the body to mount a response.
