ch 14 special senses Word Scramble
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Question | Answer |
tough, white outer covering that surrounds the eyball | sclera |
colored portion of the eye | iris |
center of the iris that control the amount of light entering the eye | pupil |
thin transparent tissue that covers the outer surface of the eye | conjunctiva |
located at the upper outer edge of each eye and produces tears | lacrimal gland |
inner corner of the eye that contains the lacrimal duct | inner canthus |
transparent, nonvascular layer covering the colored portion of the eye | cornea |
layer just beneath the sclera that contains extensive capillaries that provide blood supply to the eye | choroid |
colorless biconcave that aids in focusing images clearly | lens |
secretes aqueous humor and contains muscles for adjusting the lens to view near objects | ciliary body |
attach the lens and hold it in place, allows for proper focusing of the eye | suspensory ligaments |
third innermost layer of the eye that changes the energy of light rays into nerve impulses | retina |
responsible to visualizing colors, central vision, and vision in bright light | cones |
responsible for vision in dim light and peripheral vision | rods |
transmits impulses from the retina to the brain | optic nerve |
known as the blind spot of the eye because it contains no rods or cones | optic disc |
anterior chamber is filled with a fluid known as | aqueous humor |
posterior chamber is filled with a jelly like substance known as | vitreous humor |
inability to perceive visual colors sharply | monochromatitism |
lens of the eye becomes progressively cloudy, altering the perception of images, usually begins after the age of 50 | cataracts |
inflammation of the ucous membrane lining of the eye, also known as pink eye | conjunctivitis |
disruption of the corneal surface commonly caused by a foreign body | corneal abrasion |
occurs as a result of long term or poorly controlled diabetes causing scarring of the retina | diabetic retinopathy |
increased intraoccular pressure causing damage to the optic nerve | glaucoma |
bacterial infection of an eyelash follicle or sebaceous gland also known as a stye | hordeolum |
better clarity of distant objects, farsightedness | hyperopia |
better clarity of close objects, nearsightedness | myopia |
inadequate vision at night | nyctalopia(night blindness) |
occurs over the age of forty, when the lens cannot focus due to loss of elasticity resulting in farsightedness | presbyopia |
failure of the eyes to gaze in the same direction due to weakness of the muscles | strabismus |
instrument used to examine the external and internal structures of the eye | ophthamascope |
test that determines intraocular pressure | tonometry |
the visual part of the ear that includes the auricle, external auditory canal and ends at the tympanic membrane | external ear |
this portion of the ear contains the auditory ossicles, the eustacian tube and oval wondow | middle ear |
the three auditory ossicles (tiny bones) are | malleus; incus and stapes |
transmits sound from the tympanic membrane to the second auditory ossicle; shaped like a hammer | malleus |
transmits sounds from the malleus to the third auditory ossicle; shaped like an anvil | incus |
transmits sound from the incus to the inner ear; shaped like a stirrup | stapes |
bony structures of the inner ear | vestibule; cochlear;semicircular canal |
membranous structure of the inner ear | utricle;saccule; cochlear duct; membranes of the semicircular canal |
these membranous pouches aid in maintaining balance | utricle and saccule |
the true organ of hearing housed in the cochlea | organ of Corti |
pathway of sound vibrations | pinna;external auditory canal;tympanic membrane;malleus;incus;stapes;oval window;cochlea;organ of corti;auditory nerve fibers;cerebral cortex |
surgical incision into the tympanic membrane | myringotomy |
surgical repair of the eardrum with a tissue graft | myringoplasty |
inflammation of the middle ear | otitis media |
inflammation of the outer ear | otitis external (swimmers ear) |
ringing in the ear | tinnitus |
excessive earwax in the external ear canal | impacted cerumen |
inflammation of the mastoid process | mastoidititis |
perforation of the tympanic membrane | rupture of the eardrum |
process of measuring how well one hears at various frequencies | audiometry |
instrument used to examine the ear | otoscope |
examine using a tuning fork that compares bone conduction and air conduction | Rinne test |
examine using a tuning fork to detect whether a hearing loss is conductive loss or sensory loss | Weber test |
devices that amplify sound to provide more precise perception | hearing aid |
surgical insertion of small tubes to aid with drainage of fluid | myringotomy with tubes |
exophthalmia | abnormal protrusion of the eyeball; as seen in Graves disease |
hyphema | bleed into the anterior chamber of the eye |
light rays enter the eye and are transmitted through: cornea; aqueous humor; pupil; lens and the vitreous humor to the retina | the process of vision |
the retina transmits images to the | optic nerve |
abnormal curvature of the cornea resulting in blurry vision | astigmatism |
involuntary movements of the eye usually resulting from a neuological issue | nystagmus |
LASIK stands for | laser in situ keratomileusis |
procedure done to correct error of refraction | lasik |
surgical procedure done to relieve intraocular pressure in patients with glaucoma | trabeculectomy |
used to assist with visualizing a corneal abrasion | fluorescein staining |
removal of ear cartilage to allow the ears to sit closer to the head, considered a cosmetic procedure | otoplasty |
chronic inner ear disease due to an over accumulation of endolymph | Menieres disease |
signs and symptoms of Menieres disease | vertigo, hearing loss, feeling of pressure or fullness inaffected ear, tinnitus |
infection or inflammation or the labyrinth or inner ear | Labyrinthitis |
signs and symptoms of labyrinthitis | vertigo, altered equilibrium, nystagmus and occasional neurosensory hearing loss |
Created by:
clarevoyant1019
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