Answer:
I'm almost positive that's its C but if they already paid then D
The glial cells forming myelin sheaths are called oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system. The gaps (approximately 1 micrometer wide) formed between myelin sheath cells long the axons are called Nodes of Ranvier.
hope this helps :p
I think the answer is C im not a 100% sure glad i could help you tho
Good oxygen usage during exercise, low resting heart rate, and good step- test results, are some of the GOOD things that come from regular exercise.
High blood pressure <em>(A)</em> is one of the BAD things that happen to people who DON't exercise regularly.