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Unit 7:7

The Senses

QuestionAnswer
The lacrimal glands produce tears to moisten and cleanse the eye.
The area of sharpest vision in the eye is the fovea centralis.
If light rays are not refracted correctly, vision is distorted or blurred.
General sense receptors for pressure, heat, cold, touch, and pain are located throughout the body.
Symptoms of a cataract include blurred vision, halos around lights, and gradual vision loss.
Radial keratotomy (RK) can correct myopia and eliminate the need for corrective lenses.
The taste buds for sweet and salty tastes are located at the tip of the tongue.
Otitis externa can be caused by swimming in contaminated water.
The outermost layer of the eye is the ____. sclera
The mucous membrane that lines the eyelids and covers the front of the eye is the ____. conjunctiva
The circular, transparent part on the front of the sclera that allows light rays to enter the eye is the ____. cornea
A circular structure behind the pupil that refracts light rays is the ____. lens
The colored portion of the eye with an opening in the center called a pupil is the ____. iris
The tube that connects the middle ear with the pharynx is the ____. eustachian
The receptor for sound waves in the inner ear is the ____. organ of Corti
Helps maintain the forward curvature of the eyeball and refracts light rays the aqueous humor
When an incision is made into the tympanic membrane and tubes are inserted to relieve pressure in the middle ear, the procedure is called a ____. myringotomy
The sense of smell is made possible by ____. olfactory receptors
The tongue is a mass of muscle tissue with projections called ____. papillae
The layer of the eye that is interlaced with blood vessels to nourish the eye is the ____. choroid coat
Vertigo caused by a collection of fluid in the inner ear is called Meniere’s disease
Lens becomes cloudy or opaque Cataract
Farsightedness caused when the light rays are not refracted sharply enough Hyperopia
An abnormal shape or curvature of the cornea that causes blurred vision Astigmatism
Eyes do not focus or move together Strabismus
Sound waves are not conducted to the inner ear Conductive hearing loss
Increased intraocular pressure caused by an excess amount of aqueous humor Glaucoma
Commonly called “lazy eye” Amblyopia
Inflammation or infection of the middle ear Otitis media
Condition that occurs when the stapes becomes immobile Otosclerosis
sight, hearing, taste, smell, balance maintenance special senses.
Bending of light rays so they focus on the retina is called refraction
parts of the eye that refract light rays as the rays pass through the eye cornea, aqueous humor, pupil, lens, vitreous humor
malleus, incus, stapes the three ossicles in the middle ear
equalizes air pressure on both sides of the tympanic membrane the eustachian tube
occurs when sound waves are not conducted to the inner ear conductive hearing loss
occurs when there is damage to the inner ear or auditory nerve sensory hearing loss
treatment is directed toward eliminating the cause, such as removing obstructions, treating infections, repairing ruptured tympanic membrane, replacing the stapes, and using hearing aids conductive hearing loss
treatment is limited, but cochlear implants may help improve severe hearing loss sensory hearing loss
First section of the inner ear that acts as an entrance to the other two parts. Vestibule
Snail shell containing organ of Corti Cochlea
Located in all parts of the body general sense receptors for pressure, heat, cold, touch, and pain.
To protect the ear special glands in the auditory canal produce a wax called cerumen
Created by: Health Science
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