The peripheral nervous system is composed of which structures?

The peripheral nervous system is composed of which structures?

• A. Brain
• B. Nerves
• C. Spinal Cord
• D. Meninges

Answer: (B)

The peripheral nervous system is made up of nerves and ganglia outside the brain and spinal cord, serving as the links between the central nervous system and the rest of the body. Nerves are bundles of axons that carry sensory information from receptors to the CNS and motor commands from the CNS to muscles, which is exactly the role of the PNS. The brain and spinal cord are central nervous system components, not peripheral. The meninges are protective membranes around the CNS, not part of the peripheral system. So the structure that belongs to the peripheral nervous system is nerves.

The peripheral nervous system is made up of nerves and ganglia outside the brain and spinal cord, serving as the links between the central nervous system and the rest of the body. Nerves are bundles of axons that carry sensory information from receptors to the CNS and motor commands from the CNS to muscles, which is exactly the role of the PNS. The brain and spinal cord are central nervous system components, not peripheral. The meninges are protective membranes around the CNS, not part of the peripheral system. So the structure that belongs to the peripheral nervous system is nerves.