What is the function of rods and cones in the human body?

Rods and cones are specialized photoreceptor cells located in the retina of the eye, where they play a crucial role in vision. Their primary function is to detect light and convert it into electrical signals that are sent to the brain, allowing us to perceive images.

Rods are sensitive to low levels of light and are responsible for night vision and peripheral vision, effectively allowing us to see in dim conditions. Cones, on the other hand, are responsible for color vision and function best in bright light. They enable us to see fine details and perceive a wide range of colors.

Understanding this distinction is important for recognizing how these cells contribute to our overall visual capability and how they respond to different lighting conditions. The other answer choices do not accurately describe the role of rods and cones, as they pertain to unrelated bodily functions such as circulation, locomotion, and digestion.