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Ch. 5 Study Stack
| Term | Definition |
|---|---|
| aqueous humor | provides nourishment for the cornea, iris, and lens |
| anterior chamber | fluid-filled space between the cornea and iris |
| scleral venous sinus | duct in the anterior chamber that carrier filtered aqueous humor to veins and bloodstream |
| choroid | vascular layer beneath the sclera that provides nourishment to the outer portion of the retina |
| ciliary body | ring of tissue behind the peripheral iris that is composed of ciliary muscle and ciliary processes |
| ciliary muscle | contracts to assist in near vision |
| Cornea | transparent anterior portion of the outer covering of the eye |
| eyelid | movable, protective fold that opens and closes, covering the eye |
| fovea centralis | pinpoint depression in the center of the macula lutea that is the site of sharpest vision |
| fundus | interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole |
| Zeis glands | oil glands opening into the follicles of the eyelashes |
| tarsal glands | oil glands located along the rim of the eyelids |
| meibomian glands | oil glands located along the rim of the eyelids |
| iris | colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil |
| lacrimal gland | gland located in the upper outer region above the eyeball that secretes tears |
| lacrimal ducts | tubes that carry tears to the lacrimal sac |
| Lacrimal sac | structure that collects tears before emptying into the nasolacrimal duct |
| lens | the transparent structure behind the pupil that changes shape to help focus images on the retina |
| lens capsule | capsule that encloses the lens |
| macula lutea | responsible for central vision |
| optic disc | exit site of retinal nerve fibers as well as entrance point for retinal arteries and exit point for retinal veins |
| optic nerve | nerve responsible for carrying impulses for the sense of sight from the retina to the brain |
| pupil | center of the iris through which light passes as it enters the eye |
| retina | perceives and transmits light to the optic nerve |
| Cones | within the retina that are color sensitive and respond to bright light |
| Rods | espond to dim light |
| Sclera | tough, fibrous, white outer coat extending from the cornea to the optic nerve |
| contact lens | small, plastic, curved disk with optical correction that fits over the cornea; used to correct refractive errors |
| laser surgery | use of a laser to make incisions or destroy tissues |
| retinitis | inflammation of the retina |
Created by:
sheerinmansoor
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