hearing and equilibrium

what does the auricle collect?

sound waves

the funnel shape of the ear will aid in focusing sound into?

tympanic membrane of the middle ear

what conducts sounds waves collected by the auricle of the middle ear?

auditory canal

what are the ossicles>

malleus, incus, and stapes

what’s the function of the malleus?

transfers sound vibrations to the incus

what’s the function of the incus?

transfers sound vibrations to the stapes

what’s the function of the stapes?

pushes on the membrane of the oval window, building up pressure waves in the fluid of the cochlea

what are hair cells in contact with?

cochlear nerve

what is the semicircular canals?

where equilibrium gives you balance

what are the semicircular for each planes

frontal, sagittal, and lateral

what happens when your head moves around and the liquid inside the semicircular ducts?

the liquid sloshes around and moves the tiny hairs that line each canal

what connects the the middle ear to the oval window?

stapes

what is the oval window?

a membrane that allows the movement of the stapes to create waves in the fluid inside the cochlea of the inner ear

when the tectorial membrane moves when there is fluid movement, what does this do tot he hair cells?

causes them to bend and generate nerve signals

when hair cells bend it opens cation channels,____ those cells and results in ____ being released into the cochlear nerve

depolarizing and neurotransmitters

what are the divisions of the auricle?

helix, antihelix, concha, and lobule.

what is the function of the acoustic meatus?

conducts sound waves collected by the auricle to the middle ear

structures for outermost to innermost

tympanum, malleys, incus, stapes, cochlea

what parts of the inner ear do the nerves connect to?

cochlea, vestibule, semicircular ducts

what the function of the round window in hearing?

allows fluid movement in the cochlea

which nerves are the hair cells in contact with?

cochlear nerve

which membrane does the hair cells come in contact with?

tectorial membrane

where of high pitched sounds contact the basilar membrane?

base

where do low pitched sounds contact the basilar membrane?

apex

where would medium pitched sounds come in contact with the basilar membrane?

middle part of the membrane