Which of the following structures does NOT shorten during contraction of skeletal muscle?

Name: Which of the following structures does NOT shorten during contraction of skeletal muscle?
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Question

Quizplus · Accepted Answer

Myofilaments, which include actin and myosin, do not shorten during muscle contraction. Instead, they slide past each other, which shortens the sarcomere, the basic unit of muscle fiber, leading to muscle contraction. The lengths of the actin and myosin filaments themselves remain unchanged.

Which of the Following Structures Does NOT Shorten During Contraction