Ear The Organ of Hearing and BalanceSound 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 canal2. Eardrum3. Cochlea4. Eustachian tube

Johanna Neri