Question

he speed at which an action potential travels is increased when the axon is encased by a(n):

association area

myelin sheath

endocrine gland

glial cell

synapse

Answer 1

is it the second one?

Answer 2

Hey! there's only one thing on that list that could really encase an axon, if you look up a few diagrams of axons on the internet you'll see which, and it will help you remember at the same time :)