Structures and functions of the ear

Question 1

What vibrates with sounds waves and transmits to malleus, incus, stape - bones in middle ear?

Answer 1

Tympanic membrane

Question 2

What does the tympanic membrane doe?

Answer 2

It vibrates with sound waves and transmits to:

2. malleus, incus, stapes – bones in middle ear.

Question 3

Stapes vibrates against

Answer 3

vibrates against membrane in the cochlea - filled with fluid

Question 4

What is the cochlea?

Answer 4

the spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations.

Question 5

Where is the Organ of Corti?

Answer 5

It is situated on the basilar membrane in one of the three compartments of the Cochlea.

Question 6

Tell me about the Organ of Corti

Answer 6

-Hair cells are auditory receptors and contain cilia

Question 7

Hair dells are auditory receptors and contain cilia between

Answer 7

Basilar membrane and tectorial membrane

Question 8

What does vibration to the basilar and tectorial membrane do?

Answer 8

causes these membranes to flex back and forth, sending “waves” through the inner ear fluid causing cilia to bend. This results in action potential in neurons going to cochlear nerve to auditory nerve (cranial nerve 8)

Question 9

Specific locations of the basilar membrane flex in response

Answer 9

to specific sound frequencies going from low to high in sequential order