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EAR AND HEARING 1. PINNA-outer part of ear 5. EAR CANAL 6. EARDRUM-vibrates when sound hits it 2-4. HAMMER, ANVIL AND STIRRUP-vibrate when eardrum does.

Published byAntony Kelley Modified over 9 years ago

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Presentation on theme: "EAR AND HEARING 1. PINNA-outer part of ear 5. EAR CANAL 6. EARDRUM-vibrates when sound hits it 2-4. HAMMER, ANVIL AND STIRRUP-vibrate when eardrum does."— Presentation transcript:

1

2 EAR AND HEARING

3 1. PINNA-outer part of ear 5. EAR CANAL 6. EARDRUM-vibrates when sound hits it 2-4. HAMMER, ANVIL AND STIRRUP-vibrate when eardrum does 7. Eustachian tube-connects middle ear to throat to equalize pressure 8. OVAL WINDOW 9. AUDITORY NERVE-brings message to brain 10. COCHLEA-converts vibrations to nerve impulses with little hairs 11. ROUND WINDOW-”release” for pressure 12. SEMICIRCULAR CANALS-used for sense of balance

4 COCHLEA Spiral shaped organ attached to semicircular canals Semicircular canals are used in sense of equilibrium

5 Organ of Corti Runs the length of the cochlea hair cells are vibrated by fluid waves Vibration of hair cells depolarizes them and message travels down auditory nerve.

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