ANSWER:
Messages are carried throughout the body by the nervous system using neurons. Neurons are nerve cells specialized to carry messages throughout the body.
Step-by-step explanation:
- The brain sends "messages via the spinal cord" to the peripheral nervous system to control the muscles as well as internal organs.
- The somatic nervous system contains neurons which transmit messages to control the different organs of the body.
- The autonomic nervous system consists of neurons that carry messages to control the various body processes.