When light strikes a molecule of photopigment,the photoreceptor undergoes:
A)An action potential,for any intensity of light
B)Release of neurotransmitter
C)Depolarization
D)A decrease in the release of a neurotransmitter

Question

Quizplus · Accepted Answer

When light strikes a molecule of photopigment in the photoreceptor cells of the eye (such as rods and cones), it leads to a biochemical cascade that ultimately results in hyperpolarization of the cell. This hyperpolarization causes a decrease in the release of neurotransmitters from the photoreceptor cells to the bipolar cells. Unlike neurons that fire action potentials, photoreceptors do not generate action potentials in response to light; instead, their response modulates the release of neurotransmitters.

When Light Strikes a Molecule of Photopigment,the Photoreceptor Undergoes