Blood Supply to the Upper Airway

Question 1

arteries of the larynx

Answer 1

1. Superior Laryngeal Artery (SLA)

2. Inferior Laryngeal Artery (ILA)

Question 2

Superior Laryngeal Artery supplies

Answer 2

supraglottic structures

Question 3

Inferior Laryngeal Artery supplies

Answer 3

infraglottic structures

Question 4

venous drainage of larynx

Answer 4

• superior thyroid vein → SVC

- inferior thyroid vein → SVC

Question 5

pathway of blood TO superior laryngeal artery

Answer 5

EXTERNAL carotid artery → superior thyroid artery → superior laryngeal artery (SLA)

Question 6

pathway of blood TO inferior laryngeal artery

Answer 6

subclavian artery → inferior thyroid artery → inferior laryngeal artery (ILA)

Question 7

supraglottic structure arterial supply is from

Answer 7

EXTERNAL carotid artery → superior thyroid artery → superior laryngeal artery (SLA)

Question 8

infraglottic structure arterial supply is from

Answer 8

subclavian artery → inferior thyroid artery → inferior laryngeal artery (ILA)

Question 9

superior thyroid vein → SVC

Answer 9

venous drainage from supraglottic structures

Question 10

inferior thyroid vein → SVC

Answer 10

venous drainage from infraglottic structures