ear

Question 1

the external ear is called the

Answer 1

auricle or pinna

Question 2

opening of the external ear is the

Answer 2

external auditory canal

Question 3

the external auditory canal terminates at the

Answer 3

eardrum or tympanic membrane

Question 4

cerumen migrates out to the meatus by the movements of _______ and _____

Answer 4

chewing and talking

Question 5

in an adult the canal has an __ shaped curve in the adult

Answer 5

S

Question 6

separates the external ear and middle ear and is tilted obliquely to the ear canal, facing downward and somewhat forward

Answer 6

tympanic membrane

Question 7

characteristics of tympanic membrane

Answer 7

translucent, pearly grey membrane in which a prominent cone of light in the anteroinferior quadrant is the reflection of the otoscope light

Question 8

parts of the malleus are the

Answer 8

umbo, manubrium, and short process

Question 9

lymph fluid of the external ear drains into the

Answer 9

parotid, mastoid, and superficial cervical nodes

Question 10

tiny air filled cavity inside the temporal bone that contains tiny ear bones

Answer 10

middle ear

Question 11

bones of the middle ear

Answer 11

malleus, incus, stapes

Question 12

connects the middle ear with the nasopharynx and allows passage of air

Answer 12

eustachian tube

Question 13

3 functions of the middle ear

Answer 13

conducts sound vibrations, protects inner ear by reducing amplitude of sounds, eustachian tube allows equalization of air pressure on each side of the eardrum so the membrane does not rupture

Question 14

the inner ear is embedded in _____

Answer 14

bone

Question 15

____ contains the central hearing apparatus

Answer 15

cochlea

Question 16

the function of hearing involves the auditory system at three levels

Answer 16

peripheral, brain stem, cerebral cortex

Question 17

at the peripheral level of hearing

Answer 17

ear transmits sound and converts its vibrations into electrical impulses which can be analyzed by the brain

Question 18

at the brain stem level of hearing

Answer 18

binaural interaction which enables a person to locate the direction of a sound in space, as well as identifying the sound

Question 19

at the cerebral cortex level of hearing

Answer 19

the function is to interpret the meaning of the sound and begin the appropriate response

Question 20

the normal pathway of hearing is

Answer 20

air conduction

Question 21

an alternative route of hearing is by

Answer 21

bone conduction

Question 22

involves a mechanical dysfunction of the external or middle ear, partial loss

Answer 22

conductive hearing loss

Question 23

signifies pathology of the inner ear, cranial nerve VIII, or the auditory areas of the cerebral cortex

Answer 23

sensorineural hearing loss

Question 24

gradual hardening that causes the footplate of the stapes to become fixed in the oval window

Answer 24

otosclerosis

Question 25

type of hearing loss that occurs with aging, even in people living in a quiet environment

Answer 25

presbycusis

Question 26

the labyrinth becomes inflamed and feeds the wrong information to the brain

Answer 26

vertigo

Question 27

child's ear canals are

Answer 27

shorter and have a slope of the opposite to that of adults

Question 28

middle ear infections resulting from obstruction of eustachian tube or of passage of nasopharyngeal secretions into the middle ear

Answer 28

otitis media

Question 29

ear pain

Answer 29

otalgia

Question 30

originates within the person, it accompanies some hearing or ear disorders, seems louder when there is no competition from environmental noise

Answer 30

tinnitus

Question 31

a small painless nodule at the helix - a congenital variation and is not significant

Answer 31

Darwin's tubercle

Question 32

ears are smaller than 4cm vertically

Answer 32

microtia

Question 33

ears are larger than 10cm vertically

Answer 33

macrotia

Question 34

eardrums can turn ____ when a child or infant is crying

Answer 34

pink

Question 35

absence or closure of the ear canal

Answer 35

atresia

Question 36

chronic otitis media is relived by

Answer 36

tympanostomy tubes