FOOD20003 Lecture Notes - Lecture 6: Hemorrhoid, Maltase, Sucrase

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All figures fro(cid:373) neil ma(cid:374)(cid:374)"s digestio(cid:374), a(cid:271)sorptio(cid:374) a(cid:374)d tra(cid:374)sport le(cid:272)ture slides, se(cid:373)ester (cid:1005) (cid:1006)(cid:1004)(cid:1005)7, mel(cid:271)our(cid:374)e. Cells require a constant supply of nutrients. Nutrients are supplied via the blood of the circulatory system. Blood contains nutrients absorbed from our food by the actions of our elaborate and efficient digestive system. The digestive function involves the mechanical and chemical breakdown of food, extraction of nutrients, and breakdown of macronutrients. Absorption is the transfer of nutrients from the lumen of the small intestine to blood or lymphatic capillaries surrounding the digestive tract. Representation of the relative position various nutrients are absorbed from the intestinal lumen into the blood stream. The small intestine is the major region of digestive breakdown of food stuffs and of absorption: We do make b12 in ileum, however we make it too late to be absorbed, and hence it gets excreted with poo. The gi (gastrointestinal) tract is the flexible muscular tube from mouth to anus.

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