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What is/are is the function(s) of calcium?A. Blood clottingB. Muscular contractionC. Nerve conductionD. All of the above |
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Answer» Correct Answer - D Calcium performs all the given functions, i.e. blood clotting, muscular contraction and nerve conduction. `Ca^(2+)` ions are helpful in the formation of pro-thrombinase which catalyses breakdown of prothrombin into thrombin and small peptide fragments. Thrombin is important for the clotting of blood. Calcium plays a key regulatory role in muscle contraction. It helps in exposing the active sites on the F-actin molecules for myosin cross-bridges. Calcium ions help in the transmission of nerve impulse at a chemical synapse. |
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