Match the term with the correct definition.
-Action Potential
A)a small change in the resting membrane potential confined to a small area
B)a charge difference across the plasma membrane when the cell is in an unstimulated state
C)a larger change in resting membrane potential that spreads over entire surface of a cell
D)membrane becomes more positive when sodium ions diffuse into cell
E)return to the resting membrane potential

Question

Quizplus · Accepted Answer

An action potential is a larger change in the resting membrane potential that spreads over the entire surface of a cell.

Answer: B
 The resting membrane potential is a charge difference across the plasma membrane when the cell is in an unstimulated state.

Answer: D
 During the depolarization phase of an action potential, the membrane becomes more positive when sodium ions diffuse into the cell.

Answer: E
 Repolarization is the return to the resting membrane potential. A is incorrect because it describes a graded potential.

Match the Term with the Correct Definition