Dr. Ruggs is giving a lecture about the all-or-none-law. What would she tell the class?
A) That all neurons produce an action potential at the same time or none produce one.
B) That all neurons are active at the same time or none at all.
C) That all ion channels open at the same time or none at all.
D) That after reaching threshold, the amplitude and velocity of the action potential is the same each time.

Question

Quizplus · Accepted Answer

The all-or-none law states that once a neuron reaches threshold and produces an action potential, the amplitude and velocity of that action potential is consistent each time. In other words, the action potential either occurs completely or not at all, and it always occurs with the same strength and speed once it is initiated. The other answer choices do not accurately describe the all-or-none law.

Dr Ruggs Is Giving a Lecture About the All-Or-None-Law