Nervous System Terms

axon hillock

region where the axon connects to the cell body

interneurons

retrieve, process, and store information between sensory and motor neurons

astrocytes

type of glial cell that forms the blood brain barrier

ependymal cells

type of glial cell helps produce CSF in ventricles and help for choroid plexuses

microglial cells

move through CNS and engulf debris

Oligodendrocytes

glial cells in the CNS only that produces myelin to wrap around the axons

Satellite cells

glial cell that regulates fluid composition around neuron cell bodies

neurolemma cells

glial cells in the PNS only that form myelin

myelination

wrapping the axon with a myelin sheath to electrically insulate it

saltatory conduction

an impulse jumps from one neurofibril node to another

nerve

cable like bundle of parallel axons

endoneurium

surrounds each axon

perineurium

surrounds each fasicle

epineurium

surrounds entire nerve