Membrane Potential

An explanation of how the membrane potential is generated and maintained using the sodium/potassium ATPase and potassium leak channels.

Category:

Howto & Style

Tags:

• cell
• membrane
• potential
• sodium
• potassium
• pump
• atpase
• leak
• channel

[Chilled2m]

This, truthfully, is not a very good video. The resting membrane potential is mosly decided by the permeability of the membrane to K and NA. The permeability through "leaky channels" for K is around 75 more times more permeable then NA. Therefore, The electric gradient is established when K goes down its concentration gradient, casuing more positive charge outside of the cell. The NA/K pump only contributes to 20% or resting membrane potential

[jgalvan87]

Perfect, Cell Biology Rocks

[thezodiac8973]

care to explain leak channels -_- i just dont get them

[hernanadez10]

thumbs up for all the nursing majors!

[missliketoeat]

I'm in nursing school right now and this video REALLY helps me to understanding the purpose of having sodium and potassium in the body! Thanks for making this video!!!

[towhichwayout]

@Chilled2m Thanks for your comment that the pump only contributes to 20% of resting membrane potential. But doesn't the pump - as the guy says at the beginning - create the chemical gradient that the leaky channels' contribution to membrane potential relies upon?

[jenny07la]

@Chilled2m Thank You for the explanation!

[westsidemuderfukerr]

8) What phase is represented by the large scale movement of sodium ions during the change in membrane potential

[04kecia]

da voice was good

[04kecia]

im feel shocked

[waterfiltersystems1]

good video