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A & P Eye Terms
| Question | Answer |
|---|---|
| Name the outer layer of the eye. | Sclera |
| Name the inner layer of the eye. | Retina |
| Name the middle layer of the eye. | Choroid |
| What part of the eye is located towards the outside and functions as protection & shape? | Sclera |
| What part of the eye is part of the outer layer & is the first structure light enters? | Cornea |
| What part of the eye is in the middle layer, is made of cirular muscle, and regulates light coming into the eye. | Iris |
| What part of the eye is located at the periphery of the middle layer and contains blood vessels & nerve supply? | Choroid |
| What part of the eye is located at the periphery of the inner layer & determines if we see in color or B & W? | Retina |
| We see in B & W when the lighting is... | dim |
| We see in color when the lighting is ... | regular |
| What runs from the back of the eye to the occipital lope and carries nerve impulses? | Optic nerve |
| Which structure gives us most acute vision? | Muculalutea which is in the center of the fovea centralis. |
| Name of the opening in the center of the iris? | Pupil |
| What is the pupil size in the presence of dim light? | Dilated |
| What is the pupil size in the presence of regular light? | Constricted |
| What is the name of the thin membrane that covers the eye? | Conjunctive |
| What is the fuction of the lacrimal gland? | To produce tears. |
| Where is the Anterior Cavity located? | cornea to the lens |
| Where is the Anterior Chamber located? | cornea to the iris |
| Where is the Posterior chamber located? | iris to the lens |
| Where is the Posterior cavity located? | lens to the optic nerve |
| What fluid is located in the Anterior cavity? | Aqueous Humor |
| What fliud is located in the posterior cavity? | Vitreous Humor |
| What is the function of the lens? | accommodation (Medical term for focus) |
| What is located above and below the iris? | Canal of Schlemm |
| What is the fuction of the Canel of Schlemm? | Drains / exchanges aqueous humor |
| List the order that light travels through the eye. | Cornea, pupil, lens, vitreous humor, retina, optic nerve, occipital lope |
| In what part of the brain does vision occur? | occipital lope |
| What is the 'blind spot'? | Area where the the optic nerve enters the eye; there are no rods or cones / no vision. |
| What is the medical term for the blind spot? | optic disk |
| What is the medical term for focusing? | Accommodation |
| What is the medical term for bending of light? | Refraction |
| What does refraction take place? | In the fluid called vitreous humor. |
| In what cavity is vitreous humor located? | Posterior cavity - It extends from the lens to the optic nerve. |
| What part of the eye contains no blood? | Aqueous humor |
| What controls the shape of the lens? | Ciliary muscle |
| What fliud circulates in the anterior cavity. | Aqueous humor |
| What is the function of the vitreous humor? | Refraction |
| What makes up rods and cones? | Specialized nerve cells for converting light. |
| What vision do we get with rods? | Black & white. |
| What vision do we get with cones? | color |
| In what area do we have our highest concentration of cones? | Fovea centralis |
| What part of the eye gives us our most acute vision? | Muculalutea |
| Where is the muculalutea located? | In the center of the fovea centralis. |
| Rods are made up of a large amount of what chemical? | Rhodopsin |
| What is the result of rhodopsin turning into opsin, a protein, and retinal? | Eletrical impulse from the eye to the optic nerve; also called vision. |
| In what structure are rods and cones located? | Retina |
| What structure is located where the optic nerve and retina merge? | Optic disk |
| What causes the rhodopsin to split into opsin and retinal? | Light |
| Do we have more rods or more cones? | Rods |
| What is the fuction of the aqueous humor? | Removes wastes and circulate nutrients to all structures of the eye. |
| What shape is the lens when you are looking at something far away? | Oblong and thin |
| What shape is the lens when you are looking at something close to you? | Round and thick |
Created by:
spawmary