Action potential Flashcards
1
Q
what is the membrane potential at rest? at threshold?
A
-70mV
50mV at threshold
2
Q
What occurs during depolarization?
A
Na+ rushes into the cell increasing the membrane potential to +35, when an action potential is created.
3
Q
what occurs during repolarization?
A
K+ rushes out of the cell, decreasing the membrane potential to below -70mV (hyperpolarization)
4
Q
How is the resting membrane potential maintained?
A
by the Na+/K+ pump, which pumps 3Na+ out and 2K+ in, creating an overall negative charge inside the cell
