Voltage Clamping Flashcards
1
Q
Who discovered the voltage clamping technique?
A
Hodgkin and Huxley
2
Q
What does the degree of depolarization depend on?
A
Cell electrical resistance
3
Q
What causes the sodium activation gate to open?
A
Small depolarization of the membrane
4
Q
What causes the inactivation gate to close?
A
When the membrane is fully depolarized
5
Q
When does the activation gate close?
A
Cell has returned to a negative resting potential
6
Q
When does the potassium current switch off?
A
Axon is repolarized to a negative potential
7
Q
What is the membrane potential that sodium opens at?
A
-50mV - -40mV
8
Q
Is EPSC an inward or outward current?
A
Inward
9
Q
Is IPSC an inward or outward current?
A
Outward
