A _____ is a layer of fat cells that insulates most axons and speeds up the transmission of nerve impulses.
A)dendrite
B)myelin sheath
C)cyton
D)nucleolus

Question

Quizplus · Accepted Answer

The myelin sheath is a layer of fat cells that surrounds and insulates most axons in the nervous system. This insulation helps to speed up the transmission of nerve impulses along the axon. Dendrites are branched extensions of a neuron that receive signals from other neurons. The cyton (also known as the soma or cell body) contains the nucleus and other organelles of the neuron. The nucleolus is a small structure within the nucleus that helps to make ribosomes.

A _____ Is a Layer of Fat Cells That Insulates