The
Pinna for outer ear funnels sound vibrations into the ear canal. The sound waves hit the
eardrum a thin layer of skin (membrane) at the end of the ear canal which vibrates. The vibrations move the
ossicles, three small bones that make the sound louder. They send the sound waves to the cochlea. The
cochlea is filled with fluid which ripples with the sound waves and move tiny hair shaped cells called cilia.
Cilia transforms the vibrations into electrical impulses. The
auditory nerve send these impulses to the brain, which translate the signals into the sounds you hear.
