ACTIVITY 3.2 ACTION POTENTIALS
Slide the descriptions into the correct relative order.
Cell returns to resting ion permeability and resting membrane potential.
Na+ channels close and slower K+ channels open.
As K+ channels close, some K+ enters cell through leak channels.
K+ channels remain open and additional K+ leaves cell, hyperpolarizing it.
Membrane depolarizes to threshold. Voltage-gated Na+ channels open and Na+ enters cell. Voltage-gated K+ channels begin to open slowly.
Rap
ACTIVITY 3.2 ACTION POTENTIALS
Slide the descriptions into the correct relative order
Cell returns to resting ion permeability and resting membrane potential.
2
Na+channels close and slower K+channels open
3
As K+channels close,some K+enters cell through leak channels
K+ channels remain open and additional K+ leaves cell, hyperpolarizing it.
5.
Membrane depolarizes to threshold Voltage-gated Na+ channels open and Na+ enters cell.Voltage-gated K+ channels begin to open slowly
6.
Rapid Na+entry depolarizes cell.
7
Membrane potential is in resting state.
