Texts: +35
B
Membrane Potential (mV): 70 50
E
D
1 1
1 2 3 Time (milliseconds)
0
4
Use the figure showing phases of the action potential to answer the following question. Most of the voltage-gated sodium channels become open at label ---, and become inactivated at label ---
i) D,E
ii) C,D
iii) A,B
iv) B,C