myelinated fiber

a nerve fiber that is covered by a myelin sheath. The insulating properties of the myelin sheath enable myelinated fibers to conduct nerve impulses much faster than nonmyelinated fibers (see saltatory conduction).

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Psychology term of the day

January 29th 2025

proximal

adj.

1. situated near or directed toward the trunk or center of an organism.

2. near or mostly closely related to the point of reference or origin. Compare distal. —proximally adv.