nerve transmission Flashcards
what is a dendrite
where cell signal is received
where does the signal leave a neurone
terminal end
what si the name of the gaps in myelination
nodes of ranvier
what cells create myelin sheath in PNS
Schwann cells
what cells create myelin sheath in CNS
oligodendrocytes
what are the immune cells of CNS
microgial
what is the name for where the axon and cell body connect
axon hillock
what is the name for nerve conduction when the nerve is myelinated
saltatory conduction
what is the significance of the refractory period
allows propagation to be unidirectional
what is summation
additive effect of several electrical impulses
what is spacial summation
accummulative effect of deferent pre synaptic cells
what is temporal summation
accumulative effect of one cell stimulating neurone several times
what is membrane potential
electrical difference across a neurone in a non excited state
what is the proportion of sodium potassium pump ion movement
3x Na+ out
2x K+ in
what is equilibrium potential
electrical difference that balance concentration gradient of an ion
