3 Questions
What is the contractile unit of a muscle?
The sarcomere is the contractile unit of a muscle.
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?
Myofilaments, specifically thick and thin filaments, slide past each other during muscle contraction, causing the sarcomere to shorten and the muscle to contract.
Test your knowledge on the molecular process behind muscle movement and action potential in this quiz. Explore the chemistry that allows you to lift your arms and understand the intricate workings of skeletal muscle.
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