Which term describes a bundle of axons within the peripheral nervous system?

Which term describes a bundle of axons within the peripheral nervous system?

• A. Nerve
• B. Tract
• C. Ganglion
• D. Synapse

Answer: (A)

The bundle of axons in the peripheral nervous system is called a nerve. Nerves carry many axons together, wrapped in connective tissue layers (endoneurium around individual fibers, perineurium around fascicles, and epineurium around the whole nerve). In the central nervous system, the equivalent bundle is called a tract. A ganglion, in contrast, is a group of neuron cell bodies in the PNS, not a bundle of axons, and a synapse is the junction between two neurons where signals are transmitted. So the term that describes a bundle of axons in the peripheral nervous system is a nerve.

The bundle of axons in the peripheral nervous system is called a nerve. Nerves carry many axons together, wrapped in connective tissue layers (endoneurium around individual fibers, perineurium around fascicles, and epineurium around the whole nerve). In the central nervous system, the equivalent bundle is called a tract. A ganglion, in contrast, is a group of neuron cell bodies in the PNS, not a bundle of axons, and a synapse is the junction between two neurons where signals are transmitted. So the term that describes a bundle of axons in the peripheral nervous system is a nerve.