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What is the source of energy for muscle ...

What is the source of energy for muscle contraction?

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Main source of muscale contraction is ATP which realease energy when it is hydrolysed by enzyme Myosin ATPase in in the presence of calium and magnesium ions which act as cofactors of enzyme.
`ATP underset(Mg^(++), Ca^(++))overset(ATPase)(rarr) ADT + P i + "energy"`.
Another source of energy is ceartine phosphate.
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