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Carnegie A&P The Eye

A&P Eye and Ear Worksheet (MA Fall 2014)

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
Created by: ma2b