A graded change in membrane potential within a sensory receptor cell is always called a(n)
A) depolarization.
B) hyperpolarization.
C) action potential.
D) receptor potential.

Question

Quizplus · Accepted Answer

A graded change in membrane potential within a sensory receptor cell is called a receptor potential. Depolarization and hyperpolarization refer to changes in membrane potential, but do not necessarily occur within sensory receptor cells. An action potential is an all-or-nothing electrical signal that occurs in excitable cells like neurons and muscle cells.

A Graded Change in Membrane Potential Within a Sensory Receptor