| A | B |
|---|
| outer ear | collects sounds waves and contains the ear canal |
| ear canal | passageway connecting exterior ear to eardrum |
| eardrum | membrane that streches across the ear canal and vibrates to transmit sound |
| middle ear | amplifies sound and contains the eardrum and three small bones |
| hammer | first bone used to amplify vibrations |
| anvil | second bone to amplify vibrations |
| stirrup | third bone to amplify vibrations and send to the inner ear |
| inner ear | sound interpreter that contains ear fluid, the cochlea, and hair cells |
| oval window | second, smaller membrane that vibrates |
| ear fluid | fills the inner ear and transmits vibrations |
| cochlea | contains hair-tipped cells that generate signals about frequency, intensity, and duration of sounds |
| auditory nerve | sends nerve impulses to brain to be translated into hearing |
