01 CNS Cells
Last updated
Last updated
non neuron cells
at rest: high Na concentration outside cell, K leak out constantly maintain -70
depolarize: Na open, raise voltage. More channels open down the axon
At end of cell, Ca channels open, NT released
depolarization: Na in
repolarization: K out
repair, scar, clean up NT
HIV hide in microglia
aka oligodendrocytes
conduction velocity: speed at which electricity go down
length constant: how far go down neuron until 1/3 left of original strength
small fibers easier blocked by Na blockers (no pain but still touch)
fingertips
Nerve trunk
fasciculus: made up of small nerves
endoneurium inflammed in GBS
