AN SC260 Lecture Notes - Lecture 8: Secondary Hyperparathyroidism, Calcium Phosphate, Cholecalciferol
1 Dec 2017
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Document Summary
Individual minerals may be involved in tons of different functions. Macrominerals (required at more than 0. 01% of body weight) Proportions are very similar between species (like vertebrates) Dietary requirement between calcium and phosphorus about 1:1 or 2:1. Mostly the ration is what we are worried about. Low calcium is cytosol (are related to hormone signalling) The form that is in teeth is hydroxyapatite. Clotting blood (binds to prothrombin to start clotting) Toxicity is not that common but you can get: Osteopetrosis: over mineralization of bones and it can be very painful. The active form of calcium is 1,25 (oh)2 vitamin d3 which increase the plasma ca and controls homeostasis intestine. Most of it is in bone with calcium phosphates. Deficiencies are close to calcium ones because they are so closely related. Reduced growth, appetite, milk production (these are general ones that happen when you are deficient) As animal eat they increase the imbalance so they stop eating.
