Which of the following is important for muscle contraction and nerve impulse transmission?

Options

A. `Na^(+)`
B. `K^(+)`
C. `Ca^(++) and Mg^(++)` ions
D. None of these

Answer

C

Explanation

During muscle contraction `Ca^(2+)` leak out from sarcoplasmic reticulum to sarcoplasm and allow myosin heads to bind to acting and thus causes contraction.