What is the role of tropomyosin in skeletal muscles?
A) Tropomyosin is the chemical that activates the myosin heads.
B) Tropomyosin serves as a contraction inhibitor by blocking the actin binding sites on the myosin molecules.
C) Tropomyosin is the receptor for the motor neuron neurotransmitter.
D) Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sites on the actin molecules.
Correct Answer:
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