Chapter 5: How We Hear Flashcards
As sound waves enter the ear, they travel through the external auditory canal what happens?
Strikes the eardrum causing it to vibrate.
What is the central part of the eardrum is connected to a small bone of the middle ear is called?
The Malleus (hammer).
As the Malleus vibrates, it transmits the sound vibrations to the other two small bones of the middle ear called?
The Incus (anvil) and Stapes (stirrup).
As the stapes moves, it pushes a structure called?
The Oval Window in and out.
What happens when the stapes moves the Oval Window in and out?
Creates a wave in the fluid in the inner ear.
What does the wave stimulates?
The hair cells in the cochlea.
What happen when the wave stimulates the hair cells in the cochlea?
Electrical impulses are sent through the auditory nerve to the brain where they are interpreted.
