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A/P II Lab > Human Ear > Flashcards

Flashcards in Human Ear Deck (22)
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1

auricle (pinna-1)

-collects sound waves and directs them to auditory canal

2

external ear

-consists of auricle, helix, lobule, external auditory canal and tympanic membrane

3

external auditory canal (2)

-funnels sound waves to tympanic membrane

4

tympanic membrane (3)

-transmits sound waves from external to middle ear ossicles

5

tensor tympani muscle (6)

-mediates the attenuation reflex

6

malleus (8)

-transmits sound waves from tympanic membrane to oval window

7

incus (9)

-transmits sound waves from tympanic membrane to oval window

8

stapes (11)

-transmits sound waves from tympanic membrane to oval window

9

Eustachian tube (7)

-equalizes pressure between middle ear and external ear

10

oval window (13)

-transmits sound waves from middle ear to cochlea of inner ear

11

cochlea (18)

-registers sound waves and transmits them to cochlear nerve

12

vestibule (12)

-evaluates the position of the head in relation to gravity

13

semicircular canals

-detects movements of the head in three dimensions

14

anterior (superior) semicircular canal (16)

-detects movements of the head in three dimensions

15

posterior semicircular canal (17)

-detects movements of the head in three dimensions

16

lateral semicircular canal (15)

-detects movements of the head in three dimensions

17

bony ampullae

-contain the neuromast organs of the semicircular canals

18

anterior (superior) bony ampullae (16b)

-contain the neuromast organs of the semicircular canals

19

posterior bony ampullae (17c)

-contain the neuromast organs of the semicircular canals

20

lateral bony ampullae (15a)

-contain the neuromast organs of the semicircular canals

21

round window (14)

-dissipates sound energy from cochlea

22

vestibulocochlear nerve (19)

-transmits auditory and balance info from the ear to the brain