EAR Flashcards
Types of deafness ?
Conductive
Sensorineural
Mixed
What is conductive deafness ?
Sound cannot go through outer/middle ear
What is sensorineural deafness ?
Deafness due to damage in inner ear
Excessive fluid in inner ear leads to what condition ?
Meniers disease
Which ear disorder causes episodes of vertigo?
Meniers disease
Tumor on auditory nerve?
Acoustic neuroma
Another name for vestibular schwannoma?
Acoustic neuroma
Cholesteatoma
Abnormal cyst like growth with skin cells and connective tissue in the middle ear in association with the ear drum
Cause of cholesteatoma
Due to repeated ear infection
Otosclerosis
Hearing loss due to ear’s inability to amplify sound waves.
One of the ear bones become incapable to vibrate freely
Ringing in ear
Tinnitus
Cerumen impaction
Accumulation of cerumen
Buildup of earwax
Labrynthitis
Inflammation of the inner ear
Otitis interna
Otitis externa is also called as
Swimmers ear
Otitis externa
Outer ear infection caused by h20
Otitis media
Infection of middle ear
Which type of otitis media may lead to hole in the tympanic membrane ?
Chronic supportive otitis media
Parts of ear
External ear
Middle ear
Internal ear
External ear is separated from middle ear by what?
Tympanic membrane
Ear ossicles is connected to the nasopharynx through what?
Through the pharyngeal opening of the eustachian tube
Function of semicircular canals?
Enable balance and eye tracking when moving
What part of the inner ear controls balance and eye tracking while stationary ?
The utricle and saccule
Function of cochlea?
Hearing
3 ossicles are?
Malleus
Incus
Stapes
Function of ossicles
Receive amplify and transmit sound from middle ear to inner ear
Smallest bone in the body?
Stapes
Tympanic membrane is connected to which ossicle ?
Malleus
Glands in the ear canal?
Ceruminous gland
Sebaceous gland
What is the oval window in the ear?
Opening between end of middle ear to beginning of inner ear
Function of endolymph in the ear?
Fluid through which vibrations travel from middle ear to inner ear and then transmitted to the cochlea
Function of the labrynth?
Hearing and balance
Parts of the inner ear?
Vestibule (balance)
Cochlea (hearing)
Semicircular canals (balance)
Semicircular canals contain which fluid ?
Endolymph
Cochlea contains which fluid ?
Endolymph and peri lymph
What is organ of corti?
Where sound waves are converted to nerve impulses in the cochlea
