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41 Cards in this Set
- Front
- Back
the outer white layer of the eye
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sclera
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the anterior portion of this becomes the cornea
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sclera
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the convex clear part of the anterior sclera
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cornea
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the middle layer of the eye that supplies nutrients
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choroid
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the choroid has large numbers of X
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blood vessels
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the innermost layer of the eye
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retina
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contains a pigmented reflective layer and a layer of neurons to detect light
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retina
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rods and cones are types of
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neurons
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neurons positioned in the peripheral areas of the retina that detect black and white
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rods
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neurons positioned in the fovea centralis that detect color
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cones
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the area of sharpest vision in the retina
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fovea centralis
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the colored part of the eye
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iris
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the iris is composed of what tissue?
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smooth muscle
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what does the iris do to control the amount of light that comes into the eye?
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dilates or constricts the pupil
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this structure controls the amount of light that enters the eye
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iris
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the space or opening in the iris
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pupil
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a clear structure in the eye located between the iris and the vitreous humor
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crystalline lens
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the structure responsible for accommodation in the eye
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Chrystalline lens
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making adjustments to refract or bend the incoming light rays on the fovea centralis of the retina
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accommodation
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the blind spot where the optic nerve attaches to the eye
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optic disc
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the optic disk area contains no X or Y
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rods or cones
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the circular muscle that surrounds the lens of the eye
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cilliary muscle
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the ligament made of tiny fibers that connect the ciliary muscle to the lens
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suspensory ligament
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the space between the cornea and the lens
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anterior chamber
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the vitreous chamber is filled with X and Y
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vitreous humor
vitreous body |
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the space behind the lens
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vitreous chamber
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muscles used for eye movement
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extrinsic muscles
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six extrinsic muscles of the eye:
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four rectus:
superior, inferior, medial, lateral two oblique: superior, inferior |
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the two extrinsic eye muscles that move the eye away from the midline are:
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superior and inferior obliques
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five refractive structures of the eye:
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cornea
aqueous humor lens vitreous humor and vitrous body |
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As light enters the eye, to refract means to bend the light rays to focus the image onto what?
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the fovea centralis
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protective structures of the eye that shade the eye and prevent particles and perspiration from falling into the eye
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eyebrow and eyelashes
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protective structures that form a bony rim around the eye
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socket
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protective moveable covering for the eye that moves tears over its surface
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eyelid
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the external lining that covers the anterior surface of the eyeball and the posterior surface of the eyelid
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conjunctiva
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tear producing glands and their ducts are known collectively as
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lacrimal apparatus
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an almond shaped gland that secrets tears onto the upper lateral corner of the eye
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lacrimal gland
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a duct through the lacrimal bone that carries tears into the nasal cavity
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nasolacrimal duct
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light passes through... give the names of the structures from the outside in...
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cornea
aqueous humor pupil crystalline lens vitreous body retina |
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cornea
aqueous humor lens vitreous humor these structures are all X |
transparent
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place where light waves get translated into nervous system information
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retina
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