LIFESCI 2N03 Chapter Notes - Chapter 3: Probiotic, Cholecystokinin, Subclavian Vein
8 Oct 2017
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Colon withdraws water and leaves behind semisolid waste. Muscular action of digestion peristalsis: constriction and relaxation of gi tract to propel food along stomach action: three sets of muscles (circular, longitudinal and diagonal) work to break apart food and force chyme downwards. Prevents re ux of stomach contents and defecating right away. Secretions of digestion saliva: salivary glands squirt saliva to moisten food and easily pass it down esophagus gastric juice: gastric glands in stomach secrete gastric juice (water, enzymes and hcl). Bile is an emulsi er so enzymes can have access to digest it. 3. 4 the health and regulation of the gi tract. Gi bacteria also ferment bre and complex proteins called prebiotics because encourage growth and activity of bacteria bacteria also produce nutrients in the process also produce vitamins such as biotin, folate, ribo avin, thiamin, vitamin b6, b12 and k.
