26.How long does absorptive stage last after you ate a meal? 27.Which hormone predominates during absorptive stage? List the processes stimulated by this hormone. 28.Which hormone predominates during post-absorptive stage? List the processes stimulated by this hormone. 29.Explain the role of vitamins and list most common vitamins. What is the difference between a vitamin and a microelement? 30.List the functions of the following vitamins and diseases associated with their deficiency: A, B1, B6, B12, D, K, folic acid.A – Maintains general health and vigor of epithelial cells. Beta-carotene acts as antioxidant to inactive free radical.B1- acts as coenzymes for many different enzymes that break carbon- to- carbon bonds and are involved in carbohydrate metabolism of pyruvic acid to CO2 and H2O.B6- essential coenzyme for normal amino acid metabolism; assists production of circulating antibodies. They may function as coenzyme in triglyceride metabolism.B12- coenzyme necessary for red blood cell formation, formation of amino acid methionine, entrance of some amino acids I nto Krebs cycleD- Essential for absorption of calcium and phosphorus from GI tract. Works with parathyroid hormones (PTH) to maintain Ca2+ homeostasisK- Coenzyme essential for synthesis of several clotting factors by liver, including prothrombin.Folic acid- component of enzyme systems synthesizing nitrogenous bases of DNA and RNA; it is essential for normal production of red and white blood cells.
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