Eye Anatomy External

The iris is part of the uveal tractthe middle layer of the wall of the eye. Tap on the image or pinch out and pinch in to resize the image.

External Anatomy Of The Eye Diagram Quizlet

Two activities happen to protect the eye.

Eye anatomy external. The iris is the colored part of the eye that controls the amount of light that enters into the eye. Human eye parts 1. It is the most visible part of the eye.

This includes the eyelids. Nerve signals that contain visual information are transmitted through the optic nerve to the brain. Anatomy of the eye.

The outer fibrous or sclera 2. The eye is surrounded by the orbital bones and is cushioned by pads of fat within the orbital socket. Click on a label to display the definition.

The eyelids or thin folds of skin that coverand protect the cornea and conjunctiva from chemical or physical activity. Medlineplus medical encyclopedia image. Oval opening in the upper lid margin where tears enter to flow to the lacrimal sac.

The human eye ball is spherical in structure and is about 24 mm in a diameter. The external structure of the eye. The structure of the human eye is made of three layers.

Lacrimal system tear drainage system the lacrimal system is crucial for tear production and management which includes distribution of tears and draining excess tears. As light passes through the eye the iris changes shape by expanding and letting more light through or constricting and letting less light through to change pupil external and internal eye anatomy. It lies in front of the crystalline lens and separates the anterior chamber from the posterior chamber.

Malfunction in any part of the system can cause serious complications. Extraocular muscles help move the eye in different directions. Much less important than the lower punctum.

Anatomy Of The Eye Springerlink