make up 1/2 of the brain's mass, can divide
most abundant, makes BBB and provide nutrients to neurons
smallest and least abundant, phagocytes, derived from monocytes, engulfs microorganisms
ine the ventricular cavities and are ciliated and aid in circulation of CSF
increase impulse, insulate
PNS, surround neuron cell bodies within ganglia
PNS, surround axon, make myelin
cable like organs in the PNS
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