A) 5
B) 20
C) 40
D) 55
Correct Answer: B
Solution :
Vibrations that come into contact with the tympanic membrane travel through the three ossicles and into the inner ear. The oval window is the intersection of the middle ear with the inner ear, and is directly contacted by the stapes; by the time vibrations reach the oval window, they have been amplified over twenty times from what they were when they contacted the tympanic membrane, a testament to the amplifying power of the middle ear.
You need to login to perform this action.
You will be redirected in
3 sec
