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9 terms

Neuroglia of CNS and PNS

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Ependymal cells
lines ventricles and central canal of spinal cord where CSF circulates
have cilia to help CSF circulate
could possibly have neuron producing stem cells
choroid plexus
specialized ependymal cells
produce CSF
Astrocytes
largest/ most numerous neuroglia
gives a structural framework for neurons w/in the CNS
star shaped structure
create Blood Brain Barrier (BBB)
wrap around capillaries to allow certain substances to enter brain ISF
regulates the ISF concentration of ions
Oligodendrocytes
wrap CNS axons in a myelin sheath,
one can wrap several axons
myelin sheath is high in lipid content
White Matter
myelinated axons,
myelin greatly increases the speed of conduction
Gray Matter
unmyelinated axons and cell bodies
Microglia
Least numerous/ smallest neuroglia
phagocytes that wonder throughout nervous system and engulf debris
Schwann Cells
myelinate axons in the PNS
do not branch as oligodendrocytes do
may enclose groups of axons
Satellite Cells
surround neuron cell bodies in ganglia (PNS); protects and regulates nutrients for cell bodies in ganglia