Locomotion and MovementHard

Question

Which ion is essential for muscle contraction ?

Options

A.Na
B.K
C.Ca
D.Cl

Solution

Calcium is an essential element for the contraction of muscles. Release of calcium ions from sarcoplasmic reticulum trigger the muscle contraction process. In fact, calcium ions and ATP, actin and myosin interact forming actomyosin, which causes the muscles to contract.

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