Unformatted text preview: the blood when energy sources are needed elsewhere in the body. Proteins • Proteins are split into small polypeptides by enzymes secreted by the stomach and pancreas, and on the surface of intestinal cells. • Peptidases on the surface of intestinal epithelial cells complete the digestive process. • Amino acids are absorbed into intestinal epithelial cells. • Amino acids are actively transported into cells under the influence of growth hormone and insulin. • Amino acids are used to build new proteins or as a source of energy. Water and Minerals • Water can move either direction across the intestinal wall, depending on osmotic conditions. Approximately 99% of the water entering the intestine is absorbed. Most minerals are actively transported across the intestinal wall....
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.
- Fall '10