A. muscles which work in response to the stimulus received from the motor nerves. B. glands which work in response to the stimulus received from the motor nerves C. muscles or glands which work in response to the stimulus received from the motor nerves D. efferent neurons
Correct Answer: C
Explanation
Effectors are muscles or glands that contracts or secretes in direct response to nerve impulses. Neural messages are transmitted from the CNS by efferent (meaning "carry away") neurons, or motor neurons, to effectors. The action by effectors is the actual response to the stimulus
