Transcript The Senses: Hearing

BIOL 2010 Human Anatomy & Physiology I
The Senses: Hearing
______ collects
sound waves
_____ ______
_______ (canal)
channels sound
waves
__________
______ &
_________
conduct sound
waves
The Senses: Hearing
The ____ _______
transfers sound
waves to the liquid
inside the _______
Three _____:
________
________
(cochlear duct)
________
The Senses: Hearing
Sound waves
vibrate basilar
membrane
causing
________ __
________
Bending causes ____________ in
hair cells that in turn create action
potentials in synapsing neurons
The Senses: Hearing
Basilar membrane
stiff near vestibule,
responds to ______
________ ______
(20,000 Hz).
______ _______
picked up further in
to cochlear duct,
with lowest
Excess wave energy travels back
frequencies (200
down via _____ ________ and out
Hz) at apex
_______ __________
The Senses: Balance
______
__________
Responds to
force of
________
The Senses: Hearing
________ _________
Responds to movement
of ____________ (fluid)
in _________ _______