Refer to the following graph of an action potential to answer the question.

The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label ________.
A) A
B) B
C) D
D) E

Question

Refer to the following graph of an action potential to answer the question.

The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label ________.
A) A 
B) B 
C) D 
D) E

Quizplus · Accepted Answer

Label A indicates the threshold potential, which is the minimum graded depolarization needed to activate the voltage-gated sodium channels and trigger an action potential.

Refer to the Following Graph of an Action Potential to Answer