Q. In the central nervous system
A) White matter contains many nerve cell bodies
B) The myelin sheaths are formed by Schwann cells
C) The neurons are protected from changes in plasma composition
D) The cerebrospinal fluid (CSF) is an ultrafiltrate of plasma
Explanation
In the CNS, the majority of nerve cell bodies are found in the grey matter. The myelin sheath of CNS axons is formed by oligodendropcytes. The blood-brain barrier isolates central neurons from alterations to plasma composition. The CSF is not an ultrafiltrate of plasma but is secreted by choroid plexus.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.