test chapter 7:7 Special Senses
false
Otosclerosis is an infection in the middle ear
Ossicles
Three small bones in the middle ear
Tympanic membrane
Eardrum, vibrates with the sound waves
Organ of Corti
Receptor for sound waves
true
A cataract is a loss of transparency in the lens
Astigmatism
An abnormal shape or curvature of the cornea that causes blurred vision
Lens
Circular structure located behind the pupil
Meniere's disease
Collection of fluid in the inner ear leading to severe vertigo or dizziness
Stabismus
Condition in which the eyes do not move or focus together
false
Conduction deafness is a hearing loss caused by damage in the inner ear or auditory nerve
Flase
Cones are used for vision when it's dark or dim
Conjunctivitis
Contagious inflammation of conjunctiva, commonly called pink eye
Retina
Eye layer made of layers of nerve cells
Vestibule
First section of the inner ear that acts as an entrance to the other two parts
true
General sense receptors for pressure, hear, cold, touch, and pain are located in all parts of the body
false
Hyperopia is nearsightedness
Glaucoma
Increased intraocular pressure caused by excess amounts of aqueous humor
Otitis Media
Inflammation or infection of the middle ear
Vitreous Humor
Jellylike substance behind the lens
false
Lacrimal glands produce mucous that protects the eye
List the series of parts that refract the rays so they focus on the retina.
Lens, Cornea, Aqueous and Vitreous humor, and Pupil
Sensory hearing Loss
Occur when there's damage to the inner ear or auditory nerve. Caused by head trauma, loud noise, virus/disease, and it can run in the family. Tx: None
Conductive Hearing Loss
Occurs when sound waves aren't conducted to the inner ear. Caused by ear wax, infection, and ruptured tympanic membrane. Tx: Surgical repair and/or hearing aid
true
Olfactory receptors determine the sense of smell
pupil
Opening in the center of the iris
True
Refraction is bending of light rays so they focus on the retina
Cochlea
Snail shell containing organ of Corti
true
Special glands in the auditory canal produce a wax called cerumen to protect the ear
true
Special senses allow the body to react to the environment
Otosclerosis
Stapes become immobile and cause a conductive hearing loss
Semicircular Canals
Structure in the inner ear that sends impulses for balance and equilibrium
Presbyopia
Surgical procedure, radial keratotomy, corrects this condition and eliminates the need for corrective lenses
true
The Choroid coat is interlaced with blood vessels to nourish the eye
true
The eustachian tube equalizes air pressure on both sides of the tympanic membrane
true
The sense of taste depends on taste receptors on the tongue
false
The tympanic membrane separates the middle ear from the inner ear
Name the four main tastes and the locations of the receptors for each.
Tip: salty and sweet Side: sour Back: bitter
Sclera
Tough outermost layer of the eye
Macular Degeneration
Vision loss and blindness caused by damage to he blood vessels that nourish the retina
Aqueous Humor
Watery fluid between the cornea and iris
Iris
colored portions of the eye
Conjunctiva
mucous membrane covering in front of the eye
pinna (auricle)
visible part of the ear
