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outer hair cells stiffen the basilar membrane
The outer ear helps sound to travel to the inner ear. It is responsible for collecting sound waves and directing them to the middle ear via the auditory canal.
In outer space there is no air medium for travelling of sound waves.so it is impossible for sound to travel through outer space ..!!
gather sound waves
I just love the sound of a pipe organ.
It is a box beneath the soundboard.
The ventricles
Organ pipe cacti make no noise.
The sound-producing organ of birds
vocal chords
Ear
Syrinx