Refer to the graph above.At the same time that the stimulus was introduced,a drug that specifically inhibits sodium channels was added to the system.The effect this would have is that the membrane would
A)not depolarize.
B)depolarize for the first impulse but not for a second one.
C)not be able to repolarize.
D)repolarize, but would not for a second impulse.
E)none of the above

Question

Quizplus · Accepted Answer

Sodium channels are responsible for depolarization of the membrane, so inhibiting these channels would prevent depolarization from occurring. Therefore, the membrane would not depolarize in response to the stimulus, regardless of whether it is the first or second impulse.

Refer to the Graph Above