A threshold stimulus is the
A)depolarization necessary to cause an action potential.
B)peak of an action potential.
C)hyperpolarization of an axon.
D)resting potential.
E)electrical current that crosses the synaptic cleft.

Question

Quizplus · Accepted Answer

A threshold stimulus is the depolarization necessary to cause an action potential. It is the minimum amount of depolarization needed to open enough voltage-gated sodium channels to trigger an action potential.

A Threshold Stimulus Is the