Summary The ear - Life Sciences (Biology)

I sony
labyrinthLasmallitiviotilledcavitl


The
innoetemporalboneaflvid perilymph

the vestibule
mediumair cochlea

Ear
lavityhousedt membranous'itiginstallulus
a
protected
by
hasmanyfluidfilledsacsductsthatfloa

twoenoolmigatorynerve
transmitssound
impulse
Pinna




iii
cartilaginous
covereobyskin
elastic
ampulla
i
vestibule i
unctionconcentrate
unowaresonavoitary
ening sexternalavoitary cochlea
nailmeatus round
window
withinnerear
eternalauditory
canal
meatus
unctionconducts
sound
wavestothetympanic
membrane
tube
Eustachian
innerpartp enetrate
otemporalboneotskull

inedwithspecialcens
pharynx
neocerumengianos withoutsideatm
Laindirectcontact
secrete
cerumenyellow scanossifylage
in equalizesp ressureon
either
brown
waxysubstance
function drying
prevent tympanum
soft Y.si
animmerini Yiip9
connecttympanumtoovaiwindon
noettympanimmembrane

carorumwouldnotbeabletovibr
outotearorumtear's d efense
m embraneseparates Hammeriattatcheotoearorum freelyitpueisurewerenotsameonauth
mechanismc ontstoreignbooies tympanic a
middlesouterear
lathroatendisclosedbyringofm
je
small
hairs
outside
externalearald



É
rough tissue
connective ftp.fgy
gggygytMmtemiirasnte'thing
hewaxglanosinthertunction amiooleeartearorum
mucous
pitearwaxbecomeshardicanimpare them Étheldbyting ligaments earexposedtooutside
middle

by
earingremoved doctor Functionvibrateto
transmitsoundwave
transmit
toossicieswnicnwinvibrates
from
vibrations tympanum tooral
window



Vestibularnerve
zarrangedinzoittplanes




FIIEana
structure
elongated
sacculus
balances
equilibrium
utriculus
t
chochlea functionsenseotheavingcontain
membranouschochle.in
c orresponding
bony
cochlearecoiled orogniffti
mechannaisound
3canals into
vibrations nerve
impulses
canaluppercanal
i vestibular
fluidperilymph
2 cochlearianatimiddleianal
fluidendolymph
3tympaniccanallower
canal
Avioperilymph

, Functions of the ear

EARING Couteutmiddletchochlea
soundwavestravelthroughairicollecteddirectedtoexternalauditory
canal bypinnae
strikeexternalauditory
canaleardrumthatvibrates with same
frequency
assoundwaves
to
vibrationstransmitted cochlea

ossiclesrockbackstorthligaments

soundwavestravelthroughboneinmiooleear

ossiaelamplitysovnoxzo
tympanumismuchlargerthanmembraneonoraiwinoowaitammerislargerthananvild

stirrup
ossiclesvibrate onoraininoon
membrane vibrate apressurewaresinpevilymphinvestibularcanal Dpressurewavesinendolymphin

sensoryhair
cellsin chochlearcanaltpevilymphin
a
wavespassthrough
sound impulsetarried
along a tympaniccanal
canal
perilymphtympanic anotorynerve cerebrum
mean.tt
9htIuw impose

membraneonround
window interpretssound
which
vibratesssomowavesoissapear
soundwarespasstitrovoltaouin
winneryear



pinnatrapssoundwaves
soundwave
anodirectsitto

auditorycanal ossines perilymphcochlea



i i

thin




X
DHairielisinorganotioni
convertstimulus simpuise
impulsecarriedviaauditorycanal
to ierebrumforinterpretation
isound heard

pressurewaves in
cochleathendieoutagainst
membraneonroundwindow