In multiple sclerosis, myelin sheaths Blank______.Multiple choice question.are lostthicken

Within the central nervous system, axons bundled together are called ______.Multiple choice question.myelin sheathssynapsesnervestracts

The protective membranes that surround the brain and spinal cord are called the Blank______.Multiple choice question.myelin sheathperitoneummeconiummeninges

Masses of myelinated nerve fibers appear __________Blank.Multiple Choicebrownwhitetransparentgray

The myelin sheath encases _____, insulating them.Multiple choice question.dendritesaxonsterminal buttonscell bodies of neurons

ction potentials are conducted more rapidly when the myelin sheath is Blank______.Multiple choice question.thickerthinner