Human Ear Flashcards

(9 cards)

1
Q

What is the tympanum and what does it do?

A

It is the large membrane of the outer ear (Can also be called the eardrum) and sound waves beat against it

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2
Q

What is inside the auditory canal?

A

Three small bones the hammer, anvil, and stirrup, which increase the force of the vibration and transfer it

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3
Q

What does the stirrup do?

A

It presses against the oval window

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4
Q

What does the eustachian tube do?

A

IT connects the throat to the middle ear and equalize air pressure

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5
Q

Where does hearing actually take place?

A

In the cochlea

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6
Q

What is also the cochlea?

A

The fluid-filled chamber of the inner ear, it accepts the wave motion that then travels through the vestibular and tympanic canals

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7
Q

What does the hair cells and sensory nerves do?

A

The hair cells are bent, as the sound waves beat against the sides of the canals and the sensory nerves transmit impulses

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8
Q

What does the autory nerve do?

A

It carries this information to the brain

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9
Q

What are the semicircular canals and what do they do?

A

They are apart of the upper inner area, positioned at right angles they are filled with fluid and help to maintain balance

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