4_25_07a - Pancreas Releases enzymes Trypsinogen...

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Physiology Wednesday, April 25, 2007 12:14 PM   Hypothalamus-pituitary control system Hypothalamus controls homeostasis by releasing Thyroid Releasing Hormones (TRH) to the  pituitary gland. The pituitary gland releases TSH to the thyroid Thyroid then releases T3 and thyroxin (T4)   See fig 45.11 for hormonal control of calcium homeostasis in mammals   Thyroid releases calcitonin => stimulates Ca2+ deposition in bones Blood level should be approximately 10mg/100ml Digestive system Maintenance of glucose homeostasis by insulin and glucogon See fig in book.   See fig 40.7  bioenergetics of an animal   Pepsin digests protein (only enzyme in stomach) Most digestion occurs in the 25 cm of the duodenum In duodenum Bile is injected  Pancreatic juice is secreted to buffer the acid from the stomach Stomach Parietal cells secrete intrinsic factor for the absorption of vitamin B
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Unformatted text preview: Pancreas Releases enzymes: Trypsinogen Procarboxypeptidase chymotrypsinogen See fig 41.21 flow chart of enzymatic digestion in the human digestive system Monosaccharides, amino acids, nitrogenous bases, sugars, and phosphates are all water soluble. Water soluble materials are absorbed into the blood stream Fat digestion Lacteals: part of lymphatic system Fats are absorbed by the lacteals Fat soluble materials go into the lymphatic system before being dumped into the bloodstream close to the heart. Eventually make it to the liver for detoxification. Differences between carnivores and herbivores Carnivores Small cecum Herbivores Large cecum Ruminants (cows) employ bacteria to break down cellulose...
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This note was uploaded on 09/29/2009 for the course NPB NPB 101 taught by Professor Weidner/wingfield during the Spring '08 term at UC Davis.

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4_25_07a - Pancreas Releases enzymes Trypsinogen...

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