|
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 |
|
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 |
(c)
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.