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Definition
| protect the eyes from injury, sunlight, and drying |
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transparent mucous membrane lining eyelids
covers the anterior surface of the white of the eye
produces mucous that prevents the eyes from drying |
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Definition
6 strap-like sk. muscles attached to the outer surface of each eye
moves eyes
maintains shape of eye
holds eyes in orbits |
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| produces lacrimal secretions (tears) |
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| tubes that lead into lacrimal sac and then into the nasolacrimal duct and then the nasal cavity |
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Definition
superficial layer of eye
DENSE CONNECTIVE TISSUE
divided into two parts: sclera and cornea |
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Definition
| protects internal structures, maintains shape of eyeball, provides a sturdy site for that attachment of extrinsic eye muscles |
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middle layer of an eye
pigmented
has 3 parts: iris, ciliary body, choroid |
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regulates lens shape and secretes aqueous humor
encircles lense
SMOOTH MUSCLE TISSUE |
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Definition
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| retina (also called what) |
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Definition
nervous tunic
produces signals in response to light |
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| what is the deepest layer of the eye? |
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Definition
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| where are rods and cones located |
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Definition
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Definition
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| where are rods and cones located |
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Definition
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| area of retina where nerve fibers and vessels pass through the fibrous and vascular tunics andante the optic nerve (blind spot) |
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| signals about vision travel along it to the optic chiasma |
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| refracts light as it passes through |
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| anterior segment is portion of the eye anterior to the _____ |
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| anterior segment is divided into anterior and posterior champers by the _____ |
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| the anterior segment contains _____ |
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Definition
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| aqueous humor maintains _______ pressure |
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| what provides nutrition for the lens and cornea? |
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| anterior chamber is the space between the ________ and the _________ |
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| posterior chamber is the space between ________ and the ___________ |
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| posterior segment is the portion of the eye posterior to the _______ |
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| the posterior segment contains _________ |
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Definition
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Definition
| a thin jelly-like substance |
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| vitreous humor has a meshwork of... |
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Definition
| transparent collagenous fibers |
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Term
| vitreous humor does what? |
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Definition
transmits light
holds retina against the choroid
contributes to intraocular pressure |
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