BIOL 1080 Lecture Notes - Lecture 14: Pearson Education, Il Runar, Capillary
Document Summary
Sense and expel noxious substances vomit and diarrhea. Specialized populations of t cells localized to the intestinal mucosa e. g. peyer"s patches, mesenteric lymph nodes. Four basic processes: mobility, digestion (total of 30-80 hours) 5-8 hours in the stomach and small intestine the rest in the colon: houses resident gut microbiome (bacteria, etc. ), and protects: has its own intrinsic nervous system to control and coordinate all against pathogenic microbes that enter/reside in the tract, absorption. The cephalic phase of digestion: chemical and mechanical digestion begins in the mouth, chewing (mastication, salivary secretion is under autonomic control (stim by sns and. Provides enzymes: amylase and some lipase i. e. no protein. The gastric phase: digestion: secretory cells of the gastric mucosa note the influence of the, digestion of protein and fat, but not carbohydrate in the stomach. The small intestine: the pancreas is the main contributor of digestive enzymes. Some digestive enzymes released in inactive (zymogen) form.
