Airway Anatomy

Question 1

Recurrent Laryngeal Innervates ____

Answer 1

All muscles of the Larynx EXCEPT Cricothyroid + sensory BELOW the vocal cords

Question 2

How to block recurrent laryngeal nerve?

Answer 2

Transtracheal Injection

Question 3

Superior Laryngeal is a branch of ____

Answer 3

the vagus nerve

Question 4

Internal branch of the superior laryngeal innervates ____

Answer 4

SENSORY ABOVE the vocal cords (cords, epiglottis, arytenoids) = SensoryInternalME

Question 5

External branch of the superior laryngeal innervates ____

Answer 5

MOTOR to the cricothyroid

SIMotorExternal

Question 6

Glossopharyngeal innervates ______

Answer 6

Sensory to the posterior 1/3 of the tongue, vallecula, anterior surface of the epiglottis, oropharynx, tonsils

Question 7

How to block the glossopharyngeal nerve?

Answer 7

base of the posterior tonsillar pillar

Question 8

What do you block to inhibit the gag reflex?

Answer 8

Glossopharyngeal + Vagus (superior laryngeal)

Question 9

How to block the superior laryngeal?

Answer 9

below the hyoid cornu where the nerve penetrates the thyrohyoid membrane

Question 10

What nerve blocks to prevent coughing?

Answer 10

Recurrent Laryngeal and Superior Laryngeal

Question 11

What nerves to prevent gag?

Answer 11

glossopharyngeal

Question 12

Bilateral Recurrent Nerve Injury Sx

Answer 12

Respiratory distress, stridor, upper airway obstruction

Question 13

Bilateral Superior Laryngeal Nerve Injury Sx

Answer 13

Hoarseness, some stridor, NO RESP DISTRESS

Question 14

Degrees of normal neck extension?

Answer 14

80 degrees

Less than that = difficult laryngoscopy