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Questions and Answers
What is the contractile unit of a muscle?
What is the contractile unit of a muscle?
The sarcomere is the contractile unit of a muscle.
Describe the regions of a sarcomere.
Describe the regions of a sarcomere.
A sarcomere consists of darker A bands and lighter I bands. The A bands contain thick filaments, while the I bands contain thin filaments.
What is the function of myofilaments in muscle contraction?
What is the function of myofilaments in muscle contraction?
Myofilaments, specifically thick and thin filaments, slide past each other during muscle contraction, causing the sarcomere to shorten and the muscle to contract.
