Chapter 10.6: Ear Flashcards Preview

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Flashcards in Chapter 10.6: Ear Deck (28):
1

Define transduction (ear)

converting the detected sound into a nerve impulse, which is then sent to the temporal lobe of the brain for processing

2

What are the three parts of the external ear?

auricle or pinna, the external auditory meatus, and the eardrum or tympanic membrane

3

Where does sound travel down in the external ear?

down the auditory meatus

4

Define ossicles

the three tiny bones of the middle ear

5

What are the three bones of the ossicles called?

malleus, incus, and stapes

6

What does the middle ear consist of?

three ossicles

7

Define eustachian tube

tube which connects the middle ear to the throat and it equalizes the air pressure on each side of the eardrum

8

Define otitis media

ear infection

9

Define sacs

large spaces in the inner ear

10

Define bony labyrinth

the canals and sacs of the inner ear encased in bone

11

Define perilymph

fluid that fills the canals and sacs

12

Define endolymph

fluid that fill the membranous labyrinth tubes of the bony labyrinth

13

What are the three parts of the bony labyrinth?

vestibule, semicircular canals, and cochlea

14

What are the two parts of the vestibule?

utricle and saccule

15

Define utricle and saccule

membranous sacs that are important in maintaining balance

16

Define cochlear duct

membranous structure also involved in balance

17

Define oval window

an opening on the inner ear

18

Define organ of Corti

lies within the cochlear duct; contains sensitive hair cells that react to the vibrations of the stapes by moving

19

What is converting the detected sound into a nerve impulse, which is then sent to the temporal lobe of the brain for processing?

transduction

20

What are the three tiny bones of the middle ear called?

ossicles

21

What is the tube which connects the middle ear to the throat and it equalizes the air pressure on each side of the eardrum?

eustachian tube

22

What are large spaces in the inner ear called?

sacs

23

What are the canals and sacs of the inner ear encased in bone called?

bony labryinth

24

What is the fluid that fills the canals and sacs?

perilymph

25

What is the fluid that fills the membranous labyrinth tubes of the bony labyrinth?

endolymph

26

What are the membranous sacs that are important in maintaining balance?

utricle and saccule

27

What is an opening on the inner ear?

oval window

28

What lies within the cochlear duct; contains sensitive hair cells that react to the vibrations of the stapes by moving?

organ of Corti

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