Give reason why the muscles are able to contract and relax to bring about movements
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Explanation:
Muscles are special fibres in the body that contract and relax to cause movements. Movement is caused by the contraction and relaxation of muscles. When one muscle contracts, the other relaxes and this causes displacement. The muscles of our heart are called involuntary muscles as they don't work according to our will.
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Answer:
Muscle contain special protein called CONTRACTILE protein, which contract and relax to cause movement
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