What is the anatomy of the eyeball?
The eyeball anatomy allows people and other animals to see the world around them. This organ is specially designed for the processing of light, which is issued or reflected from objects. Although many animals have the ability to see at a very low light level, the anatomy of the eyeball does not allow to function in the complete absence of light. Specialized cells and structures in the eyeballs are responsible for a sense of supervision.
The front part of the eyeball is covered with a clean membrane known as the cornea. This membrane allows you to enter light and at the same time prevent foreign bodies to enter the eyeball. Opening in front of the eye, known as a pupil, is downloading and expanding, allowing the eyeball to admit more or less light. The eyeball anatomy in humans includes a round pupil, although the pupil may be square or elliptical in other animals.
As soon as the light enters the eye, on the back of the inside of the eyeball is upside down, the retina. This structure is covered with specialized cells known as bars and cones. Rods process light, fromAtmath the cones allows the eyeball to feel color. The information collected by the retina leaves the eyeball, enters the brain with an optical nerve and is processed into a visual image.
In addition to the components of the eyeball that allow light processing, various other systems are also in the anatomy of the eyeballs. Many muscles around the outside of the eyes allow the eyeball to move with great accuracy and accuracy. The muscles are so sophisticated in many animals that a rapidly moving object can keep directly in the center of the field of vision, while the head rotates and even when the body is in motion.
The eyeball also requires blood and vitamins to make the organs function properly. The artery of the retina, which enters the eye, along the same channel as the optical nerve, is the only source of blood and nutrients for the eyeball. Eye eyelids and in some animals nicketed membrane are part of the anatomy of the eyeball that protects this cithe body before damage.