What is a nerve?

What is a nerve?

• A. collection of axons in the PNS
• B. collection of axons in the CNS
• C. collection of neuron cell bodies in the PNS
• D. collection of dendrites in the CNS

Answer: (A)

A nerve is a bundle of axons in the peripheral nervous system. These axons, which can be sensory, motor, or mixed, travel together within connective tissue coverings to carry signals between the periphery and the CNS. In the central nervous system, similar fiber bundles are called tracts, not nerves. Neuron cell bodies in the PNS reside in ganglia outside the nerve, and dendrites are parts of neurons rather than forming nerve bundles. So the best description is a collection of axons in the peripheral nervous system.

A nerve is a bundle of axons in the peripheral nervous system. These axons, which can be sensory, motor, or mixed, travel together within connective tissue coverings to carry signals between the periphery and the CNS. In the central nervous system, similar fiber bundles are called tracts, not nerves. Neuron cell bodies in the PNS reside in ganglia outside the nerve, and dendrites are parts of neurons rather than forming nerve bundles. So the best description is a collection of axons in the peripheral nervous system.