Which term encompasses the body's fast electrochemical communication network including all nerve cells of the CNS and PNS?

Which term encompasses the body's fast electrochemical communication network including all nerve cells of the CNS and PNS?

• A. Central Nervous System
• B. Endocrine System
• C. Peripheral Nervous System
• D. Nervous System

Answer: (D)

Think of the nervous system as the body's rapid signaling network. It includes every neuron and the synapses they use to send electrical impulses and chemical messages, coordinating sensation, movement, and thought. The question asks for a term that embraces the entire fast electrochemical communication system, covering nerve cells in both the brain and spinal cord (the central part) and the nerves outside them (the peripheral part). That full scope is the nervous system. The central nervous system refers only to the brain and spinal cord, so it doesn’t include the peripheral nerves. The peripheral nervous system covers nerves outside the CNS but excludes the brain and spinal cord. The endocrine system uses hormones to communicate and operates much more slowly than neural signaling.

Think of the nervous system as the body's rapid signaling network. It includes every neuron and the synapses they use to send electrical impulses and chemical messages, coordinating sensation, movement, and thought. The question asks for a term that embraces the entire fast electrochemical communication system, covering nerve cells in both the brain and spinal cord (the central part) and the nerves outside them (the peripheral part). That full scope is the nervous system. The central nervous system refers only to the brain and spinal cord, so it doesn’t include the peripheral nerves. The peripheral nervous system covers nerves outside the CNS but excludes the brain and spinal cord. The endocrine system uses hormones to communicate and operates much more slowly than neural signaling.