What is/are is the function(s) of calcium?

Options

A. Blood clotting
B. Muscular contraction
C. Nerve conduction
D. All of the above

Answer

D

Explanation

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.