Question

bio - 201 topic 2: cell physiology & tissues
practice it
what is the term used to describe the minimum membrane potential that must be reached to trigger the opening of voltage - gated ion channels?
excitatory potential
action potential threshold
inhibitory potential
resting potential
threshold potential

Explanation:

The threshold potential is the minimum membrane - potential that must be reached to trigger the opening of voltage - gated ion channels. An excitatory potential makes the membrane more likely to reach the threshold but is not the term for the minimum potential itself. An action potential is the event that occurs after the threshold is reached. An inhibitory potential makes the membrane less likely to reach the threshold. The resting potential is the normal, unstimulated state of the membrane potential.

Answer:

E. Threshold potential