Calcium Metabolism - Biological Functions

Biological Functions

  • Structural function:

Supporting material in bones. Present as calcium phosphate.

  • Signalling function:

Intracellular calcium functions as a second messenger for some hormones.

  • Enzymatic function:

Calcium acts as a coenzyme for clotting factors.

Calcium also causes the release of Acetylcholine from Pre-synaptic terminal in the transmission of nerve impulse. Calcium causes the contraction of muscles, removing the TpI subunit from Myosin head which has ATPase activity to cause contraction.

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