PSL301H1 Lecture Notes - Lecture 4: Parietal Cell, Peristalsis, Aspirin
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PSL301H1 Full Course Notes
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Mechanical digestion is the physical breakdown of food, like by the teeth of in the stomach. Chemical digestion is whrre chemicals or enzymes work on the food molecules to chemically break down bonds. Trancellular is going from one side of the cell to the other. Transcytosis is where its transported by endocysotis and exocytosis. Proteins needs a number of enzymes to cleave them into smaller peptides. We care about the large tryglicerides and lipase cleaves them into monoglycerides or free fatty acids. Amylase stops working in the stomach because of the ph. Humans (cid:272)a(cid:374)t (cid:271)reak do(cid:449)(cid:374) fi(cid:271)er, (cid:449)e do(cid:374)"t ha(cid:448)e the e(cid:374)z(cid:455)(cid:373)es to (cid:271)reak it do(cid:449)(cid:374). Fi(cid:271)er has a large effe(cid:272)t o(cid:374) the large intestines, and the large intestines has a large collection of good bacteria. These good bacteria need an energy source, so they digest fiber. The microvilli makes up the brush border, and its full of enzymes. If you ave lactose intolerance, you lack the lactase receptor.
