NOT a function of skeletal muscles?

• A. Motion
• B. Maintenance of posture
• C. Heat production
• D. Conduct impulses

Answer: (D)

Start with what skeletal muscles primarily do: they generate force to move the body, keep us upright, and produce heat through muscle activity. The impulse that triggers contraction comes from the nervous system, which conducts electrical signals along neurons to the muscles. Once the signal reaches the muscle, it triggers contraction via excitation-contraction coupling, but the muscle tissue itself does not serve as a conduit for transmitting impulses like nerves do. So conducting impulses is not a function of skeletal muscles; their main role is to respond to neural signals with contraction and force generation, posture maintenance, and heat production.