A(n)_____ is a layer of fat cells that encases and insulates many axons,and helps electrical signals travel faster down the axon.
A)myelin sheath
B)astrocyte
C)dendrite
D)nociceptor

Question

Quizplus · Accepted Answer

The myelin sheath is a layer of fat cells that surround and insulate many axons, helping electrical signals travel faster down the axon. This is an important part of nervous system function, and damage or degradation of the myelin sheath can lead to neurological disorders such as multiple sclerosis. Astrocytes are glial cells that provide support and nutrition to neurons, dendrites are the branch-like structures on neurons that receive signals from other neurons or sensory receptors, and nociceptors are specialized sensory receptors that respond to painful stimuli. None of these options are directly involved in the insulation of axons by a myelin sheath.

A(n)_____ Is a Layer of Fat Cells That Encases and Insulates