Name the ion responsible for unmasking of active sites for myosin for cross bridge bridge activity during muscle contraction.

Options

A. Calcium
B. Magnesium
C. Sodium
D. Potassium

Answer

A

Explanation

`C^(++)` ions bind with `Tp_(c)` unit of troponin which is responsible for masking of active sites for myosin through tropmysoin. The event initiates cross-bridge activity during muscle contraction mechanism.