Principles 2 final: ENT

Question 1

Ophthalmic and maxillary nerve are branches of _____ and are ____ nerves of _____

Answer 1

cranial V (trigeminal)

sensory nerve of upper respiratory tract

Question 2

Blood supply of mouth and pharyngeal region (includes nose)

Answer 2

external carotid artery

Question 3

Venous drainage of mouth

Answer 3

facial vein and external jugular vein

Question 4

what is ligated for persistent nosebleed

Answer 4

maxillary artery

Question 5

Glossopharyngeal nerve (IX) provides

Answer 5

sensory innervation to posterior 1/3 of tounge

responsible for taste sensation

Question 6

Facial nerve (CN VII) provides

Answer 6

sensory innervation to anterior 2/3 of tongue

responsbiel for taste

Question 7

Nerves respsonible for taste

Answer 7

glosspharyngeal (IX)
Facial (VII)

Question 8

larynx is at

Answer 8

C3-6

Question 9

largest cartilage of larynx

Answer 9

thyroid cartilage (adam’s apple)

Question 10

site for emergency laryngotomy and transtracheal block

Answer 10

cricothyroid membrane

Question 11

narrows part of laryngeal cavity

Answer 11

area between vocal cords

Question 12

Larynx blood supply

Answer 12

1. superior thyroid artery (branch of external carotid)
2. inferior thyroid artery

Question 13

Larynx nerve innervation

Answer 13

vagus branches into SLN and RLC

Question 14

injury to SLN causes

Answer 14

inability to adduct (Close)

Question 15

injury to RLN causes

Answer 15

inability to open (abduct)

bilateral injury is an emergency

Question 16

Stimulation of SLN may cause

Answer 16

laryngospasm

Question 17

damage to RLN may cause

Answer 17

hoarseness or dyspnea

Question 18

Trigeminal nerve does (2):

Answer 18

1. provide sensory and motor innervation to nose sinuses, palate and toung.
2. motor control of face and mastication

Question 19

Facial nerve innervation

Answer 19

motor and sensory for facial expressions

taste to anterior 2/3 of tounge

Question 20

Glossopharyngeal (IX) innervates

Answer 20

motor and sensory from base of tounge and nasopharynx and oropharynx

responsible for gag reflex during instrumentation

Question 21

Preop guidelines for cleft lip repair

Answer 21

Rule of 10:
1. weight at least 10 pounds
2. Hgb at least 10
3. WBC less than 10,000

Question 22

No nasal intubation for lefort

Answer 22

II and III

criboform plate may be disrupted