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A & P Eye Terms

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



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