Esise=+50mVEk=80mVE5=80mV The reovhatzation duting phase " 2 "is medated by The metrorse potential at ' t 's is coled ste.The repolantation during phase 2 is mediated by These ions move ecross the cel membane via The membrane potential at "B" is called the At this potential, The timing of the activation gates means that During the peak of the action potential (membrane potential 'A), If only Na' channeis are open, the membrane poteotial wal be closest to The membrane potential during phase 4 is equal to 70mV. During this phare, the electrical feece on k ions is the chemical force on k+ions. Undet these coodtions k+will the nesve cell If during Phase 4, mote cr ion channets opened then the membrane potential would At the menberane potential iabeled "C" assume only K+ channels are open. If a population of cr chamels susdeny opened then theie would be During phase "3" tre membrane potential slowy approwehes that seen in phase 4 due to The action Dotential subsequently propagates along a myelinated nerve aron. its conduction velocity aiong this axon is by the myelination At the Node of Ramiec the pastive fux of ion theeby passing the signal to the end of the nerve fitre. In centrast, in an unmyeinated nerve aron, the passive fur of ions.

1. Esise=+50mVEk=80mVE5=80mV The reovhatzation duting phase " 2 "is medated by The
metrorse potential at ' t 's is coled ste.The repolantation during phase 2 is mediated by These ions
move ecross the cel membane via The membrane potential at "B" is called the At this potential,
The timing of the activation gates means that During the peak of the action potential (membrane
potential 'A), If only Na' channeis are open, the membrane poteotial wal be closest to The
membrane potential during phase 4 is equal to 70mV. During this phare, the electrical feece on k
ions is the chemical force on k+ions. Undet these coodtions k+will the nesve cell If during Phase 4,
mote cr ion channets opened then the membrane potential would At the menberane potential
iabeled "C" assume only K+ channels are open. If a population of cr chamels susdeny opened
then theie would be During phase "3" tre membrane potential slowy approwehes that seen in
phase 4 due to The action Dotential subsequently propagates along a myelinated nerve aron. its
conduction velocity aiong this axon is by the myelination At the Node of Ramiec the pastive fux of
ion theeby passing the signal to the end of the nerve fitre. In centrast, in an unmyeinated nerve
aron, the passive fur of ions