AP PSYCHOLOGY

Detailed explanation-1: -The fovea centralis is a small, central pit composed of closely packed cones in the eye. It is located in the center of the macula lutea of the retina. Schematic diagram of the human eye, with the fovea at the bottom. It shows a horizontal section through the right eye.

Detailed explanation-2: -Cones are concentrated in the fovea centralis. Rods are absent there but dense elsewhere. Measured density curves for the rods and cones on the retina show an enormous density of cones in the fovea centralis. To them is attributed both color vision and the highest visual acuity.

Detailed explanation-3: -Answer and Explanation: Cones are packed into the fovea, which is the very center of the eye in the middle of the macula, primarily because this is the center of our field of view and the most effective location to have high spatial acuity.

Detailed explanation-4: -Cone cells are densely packed in the fovea centralis a 0.3 mm diameter rod-free area with very thin, densely packed cones, but quickly reduce in number towards the periphery of the retina. There are about six to seven million cones in a human eye and are most concentrated towards the macula.

Detailed explanation-5: -The center of the macula is called the fovea. This area has the greatest concentration of cones and is responsible for most of our fine detailed vision.