Which of the following is a function of astrocytes?

A. They circulate the cerebrospinal fluid.
B. They produce cerebrospinal fluid.
C. They phagocytize tissue debris.
D. They form myelin in the CNS.
E. They help form the blood-brain barrier.


Answer: E

Anatomy & Physiology

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A. Estrogen is secreted by the follicle. B. The proliferative phase is day 5-14 of the menstrual cycle. C. Estrogen targets the uterine lining, causing it to thicken. D. All of the answers are true.

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