The signaling system begun by a stimulus is called a(n)
A)action potential.
B)all-or-none response.
C)receptor potential.
D)local potential.

Question

Quizplus · Accepted Answer

The signaling system initiated by a stimulus is called a receptor potential. It is a graded potential, which means its magnitude varies with the strength of the stimulus. Unlike action potentials, which are all-or-none, receptor potentials initiate local potentials. Therefore, option C, receptor potential, is the correct choice. Options A, B, and D are incorrect because action potential refers specifically to the electrical impulses that travel down the axon of a neuron, all-or-none response is a characteristic of action potentials, and local potential is a change in membrane potential that occurs in a specific region of the neuron.

The Signaling System Begun by a Stimulus Is Called A(n)