Rods and cones both have four segments, and each segment has a specialized function.

Question

Quizplus · Accepted Answer

Rods and cones have different structures and functions. Rods are responsible for vision at low light levels (scotopic vision), while cones are responsible for color vision and function well under higher light levels (photopic vision). They do not have a uniform structure of four segments each; instead, they are generally described as having an outer segment, an inner segment, a cell body, and a synaptic terminal, but the functions and structures are specialized according to their roles in vision, not segmented into four parts with equal specialization.

Rods and Cones Both Have Four Segments, and Each Segment