Hearing and Equilibrium Flashcards
What three major areas is the ear divided into
external ear, middle ear, internal ear
Which area of the ear structures serve the needs of the sense of hearing only
external and middle ear
Which area of the ear serve the need of hearing and equilibrium
internal ear
What are the part of the external ear
auricle (pinna)
lobule (earlobe)
external acoustic meatus
tympanic membrane (eardrum)
what is the auricle
collects and direct sound waves into external acoustic meatus
what is the lobule (earlobe)
completes the formation of auricle
what is the external acoustic meatus
transmit sound waves from auricle to tympanic membrane
what is the tympanic membrane
vibrate at exactly same frequency as sound wave hitting it and transmit vibrations to auditory ossicle
what are the parts of the inner ear
cochlea
vestibule
semicircular canals
what is another name for inner ear
baby labrinth
what is the function of the receptors in the cochlea
hearing
what is the function of the receptors in the vestibule
equilibrium; static equilibrium and linear acceleration of the head
what is the function of the receptors in the semicircular canals
equilibrium; rotational acceleration of the head
what is the weber test
used to evaluate whether the sound remains centralized (normal) or lateralizes ro one side or the other
what is the rinne test
used to compare bone conduction and air conduction
