Carnegie A&P The Eye Word Scramble
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Question | Answer |
List the three layers of the eye | Sclera, Cornea, Choroid |
State briefly the function and location of the sclera | outermost layer, tough, fibrous protects, support, gives eye it's characteristic shape |
State briefly the function and location of the cornea | first structure that light travels through, assists in accommodation (focus)transparent central structure |
State briefly the function and location of the iris | circular muscle, regulates amount of light |
State briefly the function and location of the choroid | blood vessels supply nutrients to structures and carry waste from structures, middle layer at periphery |
State briefly the function and location of the retina | specialized cells sensitive to light, creates chemical impulse, color, located innermost layer at periphery |
State briefly the function and location of the optic nerve | carries electrical impulse to back of brain (occipital lobe) |
Which structure gives us the most acute vision (especially color)? | Fovea Centralis |
Name for the opening in the center of the iris | pupil |
State pupil size in presence of dim light | dilated/large |
State pupil size in presence of bright light | small/constricted |
State name of thin membrane (film) which covers eyeball and protects it. | conjunctiva |
State function of the lacrimal gland | produces tears |
Describe the location of the Anterior Cavity | from cornea to lens, 2 chambers |
Describe the location of the Anterior Chamber | from cornea to iris |
Describe the location of the Posterior Chamber | iris to lens |
Describe the location of the Posterior Cavity | from lens to optic nerve, filled with vitreous humor, optic disk, retina, macula lutea, fovea |
State functions of lens | accommodation/ focusing |
State location and function of Canal of Schlemm | Anterior cavity, drain aqueous humor, merges into optic nerve |
Trace the pathway of light traveling into the eye | cornea,aqueous humor, pupil, lens, vitreous humor, retina , optic nerve, occipital lobe of the brain |
State the area of the brain in which vision occurs | occipital lobe |
State the meaning of Blephar | eyelid |
State the meaning of Ambly | dimness |
State the meaning of Presby | aging |
In which disease is choriodal hemorrhage so common? | Diabetic reitonopathy |
What does Choriodal hemorrhage cause? | Spotty blindness |
What is the treatment for Choroidal hemmorhage? | laser treatment |
Describe a cataract | Opacity of the lens |
What are the early signs of a cataract? | Difficulty driving at night |
What is the treatment for cataracts? | lens replacement |
Breifly describe macular degeneration | cones of macula become sclerosed , shrink and die |
What is a symptom of macular degeneration | wavy lines in central vision |
What is the treatment for macular degeneration | steroids stop the degeneration |
Briefly define papilledema | Swelling or accumulation in brain,putting pressure at the optic nerve |
What is the symptom of papilledema | sweeling at optic nerve causes blindness |
What are some causes of papilledema | closed head injury |
What is the treatment for papilledema | Craniotomy- drill hole and drain fluid |
Give brief definition of amblyopia | dimness of vision |
Give brief definition of presbyopia | loss of visual acuity due to aging |
Define glaucoma | Increase in IOP (more than 20) |
State 2-3 symptoms of glaucoma | peripheral damage, keyhole vision cloudy, not blurry |
State instrument used to detect glaucoma | Tonometer |
Describe myopia | near sigtedness (can't see far) |
Describe hyperopia | far sightedness (can't see near) |
What causes hyperopia and myopia | error of refraction due to eyeball shaped incorrectly |
Define astigmatism | abnormal curvature of cornea |
Define Nyctalopia | night blindness |
Define Strabismus | Optic access of the two eyes fails to fall on the same object |
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