An action potential is brought about by
A)a sudden membrane impermeability.
B)the movement of negatively charged proteins through the neuronal membrane.
C)the movement of lipoproteins to the outer side of the membrane.
D)a local change in membrane permeability caused by a threshold level stimulus.
E)all of these.

Question

Quizplus · Accepted Answer

An action potential is a localized, rapid change in membrane permeability caused by a threshold level stimulus. This is achieved through the opening and closing of ion channels in the membrane, which allows for the flow of ions across the neuronal membrane and generates an electrical signal. The other choices (A, B, C, and E) are not accurate descriptions of how an action potential is brought about.

An Action Potential Is Brought About by