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NEET2018ZoologyNeural Control and CoordinationActual

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

Options

  1. ABlood clotting
  2. BMuscular contraction
  3. CNerve conduction
  4. DAll of these

Correct answer

D. All of these

Step-by-step solution

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 synap

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