When exposed to light suddenly after the eyes have adjusted to dim light, the light seems bright because all _____ in the rods photobleaches, as does much of the photopigment in cones, resulting in complete closure of the _____ of the rods and a dramatic increase in their closure in cones. This effect is decreased by adaptation.

3000+ review questions on anatomy and physiology. 

Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.