Question

fill in the blank question
a bundle of parallel bundles in the pns is called a, while in the cns a similar axon bundle is called a

Explanation:

In the peripheral nervous system (PNS), a bundle of parallel axon - bundles is called a nerve. In the central nervous system (CNS), a similar axon bundle is called a tract. This is based on the anatomical and terminological differences between the PNS and CNS.

Answer:

Nerve; Tract