Summary The ear

BOB
BOB
Sense organ wi receptors sensitive to stimuli
H Ymovement
Sound
change in positi




theear
Delicate middle protected
skull
outer
I
foiled
sound
waves
A middle with air
travel fulled wi fluid
A inner
messages
in fluid

, OuterEar

DPinna help to catch soundwaves channelthem tocannudaitory
AAuditory canal
directssound wavestympanic membrane


Tympanic membrane waves hit tympanic membrane vibrates
malleus
MiddIIFainsssmallestbones in body Dostioles Ints
stapes
DTympatic vibrate't's Malleus D Incus stapes
membrane hammer anvil stirrup
knock off ossicles

also small muscles helpbonemoves
absorbedin veryloud sounds
middle ear ends at the bony decision containing
2 opening oval window
round window byremdembrane



stapes connected tothe oval window
will pass auditory message on the ovalwindow
causing the
membrane to vibrate


Theround window relieve pressure inner ear
middle
bulging outwards onto
ear
The middle ear is filled with air build up of pressure
is released by eustachean tube The eustachian tube
leads to throat equalise pressure built up in the middle
ear