Question

How is the resting potential established?

Accepted Answer

- Na+ K+ ATPase actively transports 3 Na+ out and 2K+ in

- membrane is more permeable to K⁺ and less permeable to Na⁺

- some K+ ions diffuse out through leakage K+ channels

- diffusion slows as K+ ions repelled by positive charge outside axon

- chemical and electrical gradients balanced

- equilibrium established

- no net movement of ions

- 65mV

Front	How is the resting potential established?
Back	- Na+ K+ ATPase actively transports 3 Na+ out and 2K+ in - membrane is more permeable to K⁺ and less permeable to Na⁺ - some K+ ions diffuse out through leakage K+ channels - diffusion slows as K+ ions repelled by positive charge outside axon - chemical and electrical gradients balanced - equilibrium established - no net movement of ions - 65mV

K+ Ions Na+ Permeable Resting Potential Established Atpase