ANATOMY
MUSCULOSKELETAL AND SOFT TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Complete the sentence:When one muscle contracts, the other muscle ____
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relaxes
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contracts
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freezes
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stretches
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Explanation:
Detailed explanation-1: -Antagonistic muscles Skeletal muscles usually work in pairs. When one contracts the other relaxes and vice versa. Pairs of muscles that work like this are called antagonistic muscles.
Detailed explanation-2: -(2) The chemical reactions lead to the muscle fibers reorganizing themselves in a way that shortens the muscle–that’s the contraction. (3) When the nervous system signal is no longer present, the chemical process reverses, and the muscle fibers rearrange again and the muscle relaxes.
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