EEB202H1 Lecture Notes - Rumen, Starch, Esophagus

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Digestive tract tube delivering + absorbing food things that are not absorbed will be removed from body. Visceral musculature = muscle surrounding the gut that does the motion of transporting. This muscle produces wave-like contractions from mouth to anus, pushing food down the tube (=peristalsis) Gi tract = produces mechanical digestion + chemical digestion where small bits of food are further broken down at the molecular level to be absorbed through wall of gut. Absorption = getting the stuff across through wall of gut + enter the circulatory cardiovascular stream. Until this happens, the food is not part of us. The inside of gi tract is just a tube and it goes right through us. So inside of it is not actually technically part of our body. For that reason you have to get absorption. Gut can be divided into various parts. Higher vertebrates has segmented along the gut, uniform across vertebrates.

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