Nov 25, 2025 · The anatomy of the eye includes auxiliary structures, such as the bony eye socket and extraocular muscles, as well as the structures of the eye itself, such as the lens and the …

In human anatomy, the iris is the colored, muscular part of the eye surrounding the pupil. The iris is in front of the lens and behind the cornea and is bathed in front and behind by a fluid known …

What are the basic parts of the human eye? What is the function of the cornea in the eye? What role does the iris play in the eye? How does the lens help us see clearly?

Lens, in anatomy, a nearly transparent biconvex structure suspended behind the iris of the eye, the sole function of which is to focus light rays onto the retina.

The eyes of animals are diverse not only in size and shape but also in the ways in which they function. For example, the eyes of fish from the deep sea often show variations on the basic …

The human eye contains about 130 million rods and about 7 million cones. Rod cells have an elongated structure and consist of four distinct regions: an outer segment, an inner segment, …

Oct 27, 2025 · When bright light is shined into an eye, the pupils of both eyes constrict. This response, called the light reflex, is regulated by three structures: the retina, the pretectum, and …

Dec 1, 2025 · The human ear, like that of other mammals, contains sense organs that serve two quite different functions: that of hearing and that of postural equilibrium and coordination of …

When light enters the eye, it passes through the cornea and the lens and is refracted, focusing an image onto the retina. Light-sensitive molecules in the rods and cones react to specific …

Nov 17, 2025 · When light enters the eye, it passes through the cornea and the lens and is refracted, focusing an image onto the retina. Light-sensitive molecules in the rods and cones …