1. Ear
The Organ of Hearing
and Balance
Sound waves enter the ear through
the auditory canal and then travel
through the eardrum, where they are
converted to vibrations. Millions of
tiny hairs in the inner ears cochlea
convert the vibration into electrical
nerve signals, which are sent to the
brain through the eustachian tube for
processing.
1. Auditory canal
2. Eardrum
3. Cochlea
4. Eustachian tube
Johanna Neri