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Study Guide Ch 17

Chabner, Language of Medicine 8th Edition, Chpt 17 Senses: Eye & Ear

1) Fiberous layer of clear tissue that extends over the anterior portion of the eye and is continuous with the white of th eyes Cornea
2) Yellowish region in the retina; contains the fovea centralis Macula lutea
3) What eye structure is transparent, biconvex, and focuses light on the retina? Lens
4) Place where optic nerve fibers cross in the brain Optic chiasma
5) Adjustment of the lens by the ciliary body Accommodation (normal adjustment of the eye to focus)
6) Photosensitive receptor cells of the retina; make the perception of color possible Rods
7) The combining for for cornea is? Kerat/o
8) The combining form for lens is? Phak/o
9) The meaning of palpebr/o is? eyelid (also blephar/o)
10) An eye inflammation commonly calld "pinkeye is" Conjunctivitis
11) Impairment of vision due to old age Presbyopia
Myopia (is which form of sightedness?) Nearsightedness
13) Defective curvature of the eye Astigmatism
14) Glaucoma is primarily diagnosed by Tonometry
15) A blind spot; area of depressed vision surrounded by an area of normal vision Scotoma (darkness)
16) Macular degeneration produces loss of central vision
17) Small hard mass on the eyelid; formed from a sebaceious gland enlargement: Chalazion
18) Snail shaped, spirally wound tube in the inner ear is the cochlea
19) Channel between the middle ear and the nasopharynx Eustachian tube
20) Myring/o means tympanic membrane (myears are myringing!)
21) Bacterial infection of the middle ear Suppurative otitis media
22) Tinnitus ringing in the ears
23) Visual examination of the ear Otoscopy
24) nerve deafness occurring with aging presbycusis
25) Fungal infection of the ear otomycosis (myc/o = fungus)
26) Contains sensitive cells (rods and cones) that transmit light energy to nervous impulses RETINA
27) Contains muscles that control the shape of the lens and secrete aqueous humor CILIARY BODY
28) Transparent body behind the iris and in front of the vitreous humor; refracts light rays to bring them into focus on the retina LENS
29) Jelly-like material behind the lens; helps to maintain the shape of the eyeball VITREOUS HUMOR
30) Dark center of the eye through which light rays enter PUPIL
31) Vascular layer of the eyeball that is continuous with the iris CHOROID
32) Delicate membrane lining the eyelids and covering the anterior of the eyeball CONJUNCTIVA
33) Fibrous layer of clear tissues that extends over the anterior portion of the eyeball CORNEA
34) Colored portion of the eye; surrounds the pupil IRIS
35) Tough, white outer coat of the eyeball SCLERA
36) inflammation of the vascular layer of the eye uveitis
37) Condition of dry eyes xerophthalmia
38) Outward deviation of the eye exotropia (exo - outward)
39) Inward deviation of the eye esotropia (eso - inward)
40) Absence of the lens of the eye aphakia
41) absence of vision in half of the visual field hemianopsia (hemi = half)
42) abnormal deviations of the eye strabismus
43) Increased intraocular pressure results in retinal and optic nerve damage Glaucoma
44) Localized purulent infection of a sebaceous gland in the eyelid hordeolum (stye)
45) Clouding of the lens causes decreased vision cataract
46) Retinal micoaneurysms, hemorrhages occur secondary to an endorcrine condition diabetic retinopathy
47) Deterioration of the macula lutea of the retina macular degeneration
Created by: penguin