| Front | Back | 
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								Auditory nerves									 | 
								These carry nerve impulses from the inner ear (the cochlea) to the brain									 | 
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								Middle ear bones (ossicles)									 | 
								Hammer-a tiny bone that passes vibrations from the eardrum to the anvil . anvil-a tiny bone that passes vibrations from the hammer to the stirrup stirrup- a tiny, U shaped bone that passes vibrations from the stirrup to the cochlea. | 
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								Cochlea | 
								Fluid filled inner ear structure lined with cilia, that move when vibrated and trigger nerve impulses to be sent to the brain									 | 
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								Eardrum									 | 
								A thin membrane that vibrates when sound waves reach it. the ear drum is found between the end of the ear canal and middle ear.									 | 
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								Eustachian tube									 | 
								A tube that connects middle ear to back of nose and throat. equalizes pressure between middle ear and air outside.									 | 
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								Outer ear canal | 
								The tube which soundwaves travel through to the ear drum									 | 
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								Pinna									 | 
								Visible part of the outer ear. it collects sound waves and directs them into the outer ear cannal									 | 
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								Semi circular canals | 
								Three loops of fluid-filled tubes that are attached to the cochlea in the inner ear,help maintain sense of balance									 |