EB - Neuronal Excitability Flashcards
1
Q
What are the 2 main things that control neuronal excitability?
A
- Resting membrane potential (equilibrium potential, Em)
- Voltage-gated Na+ channels
2
Q
What happens at the resting potential?
A
- Balance between electrical and chemical forces
- No net movement of ions
3
Q
What equation is used to predict the equlibrium potential?
A
The Nernst Equation
E = (RT/NF) lnQ
4
Q
How does the Goldman equation differ from the Nernst?
A
Takes into account more than one ion
5
Q
What ions are important to mantain resting membrane potential?
A
Na+ / K+ ATPase
