Ears, Nose, Mouth, Throat

Question 1

Middle Ear Function

Answer 1

reduce amplitude of sound, pressure equalization

Question 2

CN VII

Answer 2

Hair cell impulses->nerve receptors->acoustic nerve (sound interpretation)

Question 3

Conductive Hearing Loss

Answer 3

External or middle ear blocked, excess cerumen, torn TM (otosclerosis)

Question 4

Sensorineural/Preceptive Loss

Answer 4

Loss of CN VIII, nerve damage, age (presbycusis)

Question 5

Otitis Media

Answer 5

Middle ear infection, bubbles, trapped pus

Question 6

Conductive Loss (Weber)

Answer 6

Lateralization of sound to poor ear

Question 7

Sensorineural Loss (Weber)

Answer 7

Lateralization of sound to good ear

Question 8

Rinne Test

Answer 8

Air conduction > Bone conduction (AC>BC by 2:1)

Question 9

Conductive Loss (Rinne)

Answer 9

BC>AC (same or greater)

Question 10

Sensorineural Loss (Rinne)

Answer 10

AC>BC (same or greater) but ratio is not 2:1

Question 11

Otosclerosis

Answer 11

Gradual bone formation, impeding transmission of sound gradually (common between 20-40 years old)

Question 12

Presbycusis

Answer 12

Nerve degeneration in inner ear (60+ years old)

Question 13

CN XII

Answer 13

Patient stick out tongue, if damaged tongue deviates toward paralyzed side

Question 14

CN X

Answer 14

Uvula, patient says “ahh”, vibration of uvula phonation

Question 15

CN IX/X

Answer 15

Gag reflex