BIOL 1080 Lecture Notes - Lecture 14: Mesenteric Lymph Nodes, Gastric Mucosa, Brush Border
Document Summary
Four basic processes: motility, digestion, absorption, water, nutrients, etc, secretion, saliva, mucous, antibodies (iga, digestive enzymes, bile, bicarbonate, regulates ph in small intestine. The gastric phase: secretory cells of the gastric mucosa - not the influence of the pns, note: digestion of protein and fat but not carbohydrates in the stomach. The pancreas and associated structures: gall bladder stores bile produced by the liver, duodenum releases cck when fat is sensed, cck stimulates contraction of gall bladder. Absorption: small intestinal mucosa - villi increase surface area to promote absorption of nutrients. Amino acid/protein supplementation: something for you to think about, 1. Amino acid absorption requires transporters so it is a saturable process (also uses sodium: maximal effective dose of protein is probably about 25g, 2. amino acids go directly to the liver. They get broken down and transformed to other amino acids: 3.
