Which part of the nervous system is responsible for carrying impulses from the brain and spinal cord to effectors?

The motor nervous system is the correct choice because it specifically refers to the part of the nervous system that transmits impulses from the brain and spinal cord to muscles and glands, which are the effectors. This system controls voluntary movements, such as walking and talking, by sending messages that instruct muscles to contract and stimulate glands to release hormones or other substances.

Understanding the role of the motor nervous system is crucial as it encompasses both voluntary actions—managed by the somatic nervous system—and involuntary actions—managed by the autonomic nervous system. This distinction highlights how the motor nervous system not only initiates actions but also plays a key role in responding to external stimuli.

In contrast, the autonomic nervous system primarily regulates involuntary bodily functions, such as heart rate and digestion, without direct control from the conscious brain. The central nervous system includes the brain and spinal cord themselves and is responsible for processing and integrating sensory information rather than directly carrying impulses to effectors. The peripheral nervous system acts as a network that connects the central nervous system to the limbs and organs, but it is the motor nervous system specifically that deals with the execution of movements through its connection with effectors.