Which cells serve as electrical insulators in the central nervous system?

a. Schwann cells
b. oligodendrocytes
c. astrocytes
d. efferent neurons
e. afferent neurons


ANSWER: b

Biology & Microbiology

You might also like to view...

During winter months in temperate environments organisms can die from:

a. high rain fall. b. freezing. c. low sunlight. d. increased predation. e. increased pH level.

Biology & Microbiology

What percentage of the world's tropical forests have been cut down for cropland, fuel wood, grazing

land and timber? a. 20% b. 30% c. 40% d. 50% e. 60%

Biology & Microbiology

A person who is homozygous for the gene for hemoglobin A will have sickle-cell disease

Indicate whether the statement is true or false

Biology & Microbiology

Neil is a football player. We can tell whether he is getting enough calories by all the following EXCEPT

a. determining his body fat level. b. seeing if his body fat is about 5 percent to 18 percent. c. monitoring weight changes on a weekly basis. d. weighing him before and after football practice.

Biology & Microbiology