Exam 2

Question 1

Prebycusis

Answer 1

Deterioration of hearing due to old age

Question 2

What is the cause of prebycusis

Answer 2

Loss of outter hair cells function

Question 3

Tinnitus

Answer 3

Ringing in the ears

Question 4

Menier’s Disease

Answer 4

Excessive endolymphatic fluid pressure and most misdiagnosed disorder

Question 5

What percentage of cases are unilateral for Menier’s Disease

Answer 5

70-85% of cases

Question 6

Ototoxicity

Answer 6

damage to the ear due to toxic effects og vstioud chemical agents

Question 7

CRISPER

Answer 7

gene editing technology

Question 8

syndromic

Answer 8

other medical problems in addition to hearing loss

Question 9

non-syndromic

Answer 9

hearing loss is the only medical problem

Question 10

what percent of children are born with severe or pround hearing loss

Answer 10

1/1000 and 2/1000

Question 11

what percentage of prelingual hearing loss is genetic

Answer 11

50%

Question 12

dysplasia

Answer 12

abnormal development of a structure

Question 13

aplasia

Answer 13

lack of development

Question 14

microtia

Answer 14

abnormally small pinna

Question 15

anotia

Answer 15

no pinna

Question 16

atresia

Answer 16

no ear canal

Question 17

stenosis

Answer 17

narrowing of the ear canal

Question 18

what is the incidence related to atresia

Answer 18

1 in 10,000-20,000

Question 19

what percentage of atresia is unilateral

Answer 19

> 80%

Question 20

external otitis

Answer 20

known as swimmers ear

Question 21

extostosis

Answer 21

mounds of bony growth in ear canal

Question 22

barotrauma

Answer 22

occurs due to a sudden change in pressure

Question 23

eustachian tube dysfunction

Answer 23

does not open properly or does not close properly

Question 24

cholesteatoma

Answer 24

accumulation of keratin and skin debreis in the middle ear

Question 25

otosclerosis

Answer 25

normal bone is replaced with spongy bone that grows and then hardens - becomes stuck in place

Question 26

temporary threshold shift

Answer 26

sound expose causes temporary change in hearing sensitivity

Question 27

permanent threshold shift

Answer 27

occurs when exposure to loud sound causes a permanent decrease in hearing sensitvity

Question 28

mechanical damage

Answer 28

physical pressure from sound causes damage to the hearing system

Question 29

mechanical damage examples

Answer 29

bombs and gun shots

Question 30

metabolic damage

Answer 30

overproduction of free radicals trigger apopotsis

Question 31

what is most vulnerable to NIHL

Answer 31

outer hair cells

Question 32

mechanical damage is what dB

Answer 32

>115

Question 33

metabilic damage is what dB

Answer 33

>85

Question 34

free radicals

Answer 34

moleducles that have an unpaired electrone

Question 35

apoptosis

Answer 35

programmed cell death

Question 36

antioxidants

Answer 36

molecules with an extra electron

Question 37

sound dosimeter

Answer 37

industrial setting to monitor amount of noise a worker is exposed throughout the day

Question 38

De nova mutation

Answer 38

Genetic alteration that is present for the first time in one family member: child usually

Question 39

Connexin 26

Answer 39

protein blocker that is apart DNF-1 and is congenitive