Question

which cells are responsible for the contraction and relaxation of muscles?
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Answer 1

Answer:

ATP is responsible for contraction and relaxation in muscles .

Answer 2

Answer: Skeletal muscle cell are responsible for the contraction and relaxation of muscles...

Explanation: Each skeletal muscle fiber is a skeletal muscle cell. These cells are incredibly large, with diameters of up to 100 µm and lengths of up to 30 cm. The plasma membrane of a skeletal muscle fiber is called the sarcolemma.The sarcolemma is the site of action potential conduction, which triggers muscle contraction.

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