a: middle ear ~
b: a tunnel
What:
"If hearing is like a road, with the sound at one end traveling down the road to the brain, the middle ear is like a tunnel that the road travels through. It connects the outside and the inner ear."
Useful?
Writer: Not Stated
LCC:
Where:
Date: Dec 26 2015 3:21 PM
#9419 Email metamia about this
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