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Unformatted text preview: Three Phases of Gastric Secretion Cephalic phase Gastric phase--All designed to break down nutrients Intestinal phase Stomach 1. Food Stomach 2. Gastrin (hormone) 3. Gastrin Chief cell to produce HCL, in turn pH goes down 4. pH down to correct level activates pepsinogen(pepsin active) Pepsin Break down protein into amino acids Small Intestine Once the food is in the small intestine a number of hormones are released/stimulated: Hormones Secretin Gastric Inhibitory Important digestive and absorptive functions Secretions and buffers provided by pancreas, liver, gall bladder Three Subdivisions: Duodenum Jejunum Lleum Lleocecal sphincter Transition between small and large intestine Large intestine Reabsorb water and compact material into feces Absorb vitamins produced by bacteria Store fecal matter prior to defacation Gall Bladder Horses dont have gall bladders...
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- Winter '09