NEUR30003 Lecture Notes - Lecture 18: Ileum, Jejunum, Brainstem

• School: University of Melbourne
• Department: Neuroscience
• Course: NEUR30003
• Professor: Peter

Document Summary

* broken down into ever smaller components starting with a mechanical breakdown system and then as we go along there is chemical breakdown (enzymes involved) * separated chemically (and physically) into different nutrients that can be absorbed. * bi-products (the left overs) transported along the intestinal tract for further processing and recovery of key materials. * failure to excrete/constipation can be a long lasting and life threatening problem. In humans, when it has passed this process, it hits a huge (cid:271)ody of (cid:271)a(cid:272)te(cid:396)ia (cid:449)hi(cid:272)h (cid:272)a(cid:374) fe(cid:396)(cid:373)e(cid:374)t so(cid:373)e of the food that"s i(cid:374)digesti(cid:271)le (cid:894)e. g. (cid:272)ellulose(cid:895) and turn it into useful nutrients. These processes of digestion occur in almost every animals. * many animals also use bacterial fermentation to break down cellulose and other dietary fibres e. g. for cows fermentation occurs early in the digestive process/called rumination, for humans this occurs after digestion has occurred. * separately, bacterial fermentation breaks down cellulose to short chain fatty acids & sugars: