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30 Cards in this Set
- Front
- Back
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What are the general senses of touch |
Temperature Pressure Pain |
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Special senses |
Smell Taste Sight Hearing Equilibrium |
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What percentage of all sensory receptors are in the eyes |
70% |
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Each eye has over how many nerve fibers |
One million |
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Most of the eye is enclosed in a what |
Bony orbits |
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What kind of glands lubricate the eyes |
Tarsal glands |
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What kind of glands are located between the eyelashes |
Collard glands |
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What membrane lines the eyelashes |
Conjunctiva |
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What does the lacrimal gland produce |
Lacrimal fluid |
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What does lacrimal canals drain |
Lacrimal fluid |
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What does the lacrimal sac provide passage for |
Lacrimal fluid towards the nasal cavity |
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Where does the nasolacrimal duct empty lacrimal fluid into |
The nasal cavity |
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What is the function of the lacrimal apparatus |
To protein, moisten, and lubricate the eye |
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What are the properties of lacrimal fluid |
To dilute salt solution |
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What are the layers that form the wall of the eyeball |
Fibrous layer Vascular layer Sensory layer |
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What layer is the fibrous layer |
Outside layer |
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What layer is the vascular layer |
Middle layer |
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What layer is the sensory layer |
Inside layer |
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What is the sclera |
The white connective tissue layer |
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What is the cornea |
The transparent, central anterior portion that allows for light to pass through |
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What is the choroid and where is it |
It’s a blood nutritive layer in the posterior of the eye |
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What prevents light from scattering |
Pigment |
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What does the iris do |
Regulates the amount of light entering the eye |
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How many layers doesn’t the retina contain |
Two layers |
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What are the two layers of the retina |
Outer pigmented layer Inner neural layer |
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What are the two chambers of the eye |
Anterior (aqueous) segment Posterior (ultreous) segment |
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What is the ophthalmoscope instrument used for |
To illuminate the interior of the eyeball |
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Where is the optic chiasma located |
Where the optic nerves cross |
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What is myophia |
When distant objects appear blurry |
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What is hyperopia |
When near objects appear blurry and far objects are clear |
