Human Ear

Question 1

auricle (pinna-1)

Answer 1

-collects sound waves and directs them to auditory canal

Question 2

external ear

Answer 2

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

Question 3

external auditory canal (2)

Answer 3

-funnels sound waves to tympanic membrane

Question 4

tympanic membrane (3)

Answer 4

-transmits sound waves from external to middle ear ossicles

Question 5

tensor tympani muscle (6)

Answer 5

-mediates the attenuation reflex

Question 6

malleus (8)

Answer 6

-transmits sound waves from tympanic membrane to oval window

Question 7

incus (9)

Answer 7

-transmits sound waves from tympanic membrane to oval window

Question 8

stapes (11)

Answer 8

-transmits sound waves from tympanic membrane to oval window

Question 9

Eustachian tube (7)

Answer 9

-equalizes pressure between middle ear and external ear

Question 10

oval window (13)

Answer 10

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

Question 11

cochlea (18)

Answer 11

-registers sound waves and transmits them to cochlear nerve

Question 12

vestibule (12)

Answer 12

-evaluates the position of the head in relation to gravity

Question 13

semicircular canals

Answer 13

-detects movements of the head in three dimensions

Question 14

anterior (superior) semicircular canal (16)

Answer 14

-detects movements of the head in three dimensions

Question 15

posterior semicircular canal (17)

Answer 15

-detects movements of the head in three dimensions

Question 16

lateral semicircular canal (15)

Answer 16

-detects movements of the head in three dimensions

Question 17

bony ampullae

Answer 17

-contain the neuromast organs of the semicircular canals

Question 18

anterior (superior) bony ampullae (16b)

Answer 18

-contain the neuromast organs of the semicircular canals

Question 19

posterior bony ampullae (17c)

Answer 19

-contain the neuromast organs of the semicircular canals

Question 20

lateral bony ampullae (15a)

Answer 20

-contain the neuromast organs of the semicircular canals

Question 21

round window (14)

Answer 21

-dissipates sound energy from cochlea

Question 22

vestibulocochlear nerve (19)

Answer 22

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