Ependymal cells of the central nervous system function to:
a. Line the surfaces of the ventricles
b. Metabolize excess neurotransmitter released from neurons
c. Phagocytize foreign antigens
d. Produce cerebrospinal fluid
e. Synthesize myelin
ANS: A
Ependymal cells constitute a ciliated epithelium that lines the interior of the ventricles.
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