Studied by 4 people
Depolarization
________: a sudden change in membrane potential- usually from a (relatively) negative to positive internal charge.
K+ ions
As ________ are more concentrated inside the neuron, opening potassium channels causes a passive efflux of potassium.
Repolarization
________: the restoration of a membrane potential following depolarization (i.e.
Na+ ions
As ________ are more concentrated outside of the neuron, the opening of sodium channels causes a passive influx of sodium.
Refractory period
________: the period of time following a nerve impulse before the neuron is able to fire again.
normal resting state
In a(n) ________, sodium ions are predominantly outside the neuron and potassium ions mainly inside (resting potential)
efflux of potassium
The ________ causes the membrane potential to return to a more negative internal differential (repolarization)
sodium potassium
Before a neuron can fire again, the resting potential must be restored via the antiport action of the ________ pump.
Repolarization
the restoration of a membrane potential following depolarization (i.e
Refractory period
the period of time following a nerve impulse before the neuron is able to fire again
Nerve impulses
action potentials that move along the length of an axon as a wave of depolarization
Threshold potential
the level required to open voltage-gated ion channels
