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.
Read more about this topic: Calcium Metabolism
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