Answer

what is the role of tropomyosin in skeletal muscles?

A. Tropomyosin is the receptor for the motor neuron neurotransmitter.
B. Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sites on the actin molecules.
C. Tropomyosin is the chemical that activates the myosin heads.
D. Tropomyosin serves as a contraction inhibitor by blocking the actin binding sites on the myosin molecules.

B