The Resting Membrane Potential Flashcards
1
Q
What is the resting membrane potential?
A
When there is a potential difference between the inside and the outside of the cells
The outer surface are positive and the inner surface are negative
-70 mv
2
Q
What is the cause of the resting membrane potential?
A
Due to unequal distribution of ions on both sides of the cell membrane
3
Q
What ions are mostly outside the cell membrane?
A
Na+,Cl- and HCO3-
4
Q
What ions are inside the cell?
A
K+
5
Q
Why is there unequal distribution of ions on both sides of the cell membrane?
A
Due to selective permeability of cell membranes
Na+-k+ pump
6
Q
During resting conditions what ion has the maximum permeability?
A
K+
