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071
The Eye -Q – Anatomic Terms & A – Meaning
| Question | Answer |
|---|---|
| anterior chamber | fluid-filled space between the cornea and iris |
| aqueous humor | watery liquid secreted by the ciliary processes that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens (humor = fluid) |
| canal of Schlemm | duct in the anterior chamber that carries filtered aqueous humor to the 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 | smooth muscle portion of the ciliary body, which contracts to assist in near vision |
| ciliary processes | epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor |
| conjunctiva | mucous membrane that lines the eyelids and outer surface of the eyeball |
| cornea | transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image |
| 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 (fovea = pit) |
| fundus | interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole (curvature at the back of the eye) (fundus = base) |
| glands of Zeis | oil glands surrounding the eyelashes |
| meibomian glands | oil glands located along the rim of the eyelids |
| iris | colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil |
| lacrimal gland ( lak′ri-măl 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 | transparent structure behind the pupil that bends and focuses light rays on the retina |
| lens capsule | capsule that encloses the lens |
| macula lutea | central region of the retina; responsible for central vision; yellow pigment provides its color (lutea = yellow) |
| nasolacrimal duct | passageway for tears from the lacrimal sac into the nose |
| optic disk , op′tik disk | 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 |
| posterior chamber | space between the back of the iris and the front of the vitreous chamber; filled with aqueous humor |
| pupil | black, circular opening in the center of the iris through which light passes as it enters the eye |
| retina | innermost layer that perceives and transmits light to the optic nerve |
| cones | cone-shaped cells within the retina that are color sensitive and respond to bright light |
| rods | rod-shaped cells within the retina that respond to dim light |
| sclera | tough, fibrous, white outer coat extending from the cornea to the optic nerve |
| trabecular meshwork | mesh-like structure in the anterior chamber that filters the aqueous humor as it flows into the canal of Schlemm |
| vitreous | jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye |
| anterior chamber | fluid-filled space between the cornea and iris |
| aqueous humor | watery liquid secreted by the ciliary processes that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens (humor = fluid) |
| canal of Schlemm | duct in the anterior chamber that carries filtered aqueous humor to the 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 | smooth muscle portion of the ciliary body, which contracts to assist in near vision |
| ciliary processes | epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor |
| conjunctiva | mucous membrane that lines the eyelids and outer surface of the eyeball |
| cornea | transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image |
| 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 (fovea = pit) |
| fundus | interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole (curvature at the back of the eye) (fundus = base) |
| glands of Zeis | oil glands surrounding the eyelashes |
| meibomian glands | oil glands located along the rim of the eyelids |
| iris | colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil |
| lacrimal gland ( lak′ri-măl 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 | transparent structure behind the pupil that bends and focuses light rays on the retina |
| lens capsule | capsule that encloses the lens |
| macula lutea | central region of the retina; responsible for central vision; yellow pigment provides its color (lutea = yellow) |
| nasolacrimal duct | passageway for tears from the lacrimal sac into the nose |
| optic disk , op′tik disk | 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 |
| posterior chamber | space between the back of the iris and the front of the vitreous chamber; filled with aqueous humor |
| pupil | black, circular opening in the center of the iris through which light passes as it enters the eye |
| retina | innermost layer that perceives and transmits light to the optic nerve |
| cones | cone-shaped cells within the retina that are color sensitive and respond to bright light |
| rods | rod-shaped cells within the retina that respond to dim light |
| sclera | tough, fibrous, white outer coat extending from the cornea to the optic nerve |
| trabecular meshwork | mesh-like structure in the anterior chamber that filters the aqueous humor as it flows into the canal of Schlemm |
| vitreous | jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye |
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MT student1
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