Q. Regarding nerve action potential, which is TRUE? (Solved)
1. normal resting membrane potential is -40mV
2. initial rapid depolarisation is due to rapid influx of Ca2+ via fast channels
3. during depolarisation, Na+ permeality is greater than K+ permeality
4. hyperpolarisation is due to continuous opening of Na+ channels
5. plateau is formed by slow Ca2+ channels
- c. during depolarisation, Na+ permeality is greater than K+ permeality