Nose/Nasal Cavity/Paranasal Sinus: Arterial & Venous Supply

Question 1

Branch of the internal carotid a. that supply the nasal cavity

Answer 1

Opthalamic a.

Question 2

Branches of the opthalamic a.

Answer 2

• Anterior ethmoidal a.
• Posterior ethmoidal a.

Question 3

Branch of the external carotid a. that supplies the nasal cavity

Answer 3

Maxillary a.

Question 4

Artery that supplies the nasal cavity that originates from the external carotid a.

Answer 4

Facial a.

Question 5

Functions of the venous plexus/lateral wall & septum

Answer 5

• Heat exchange
• Dilates & constricts to control aperature/nasal meatus

Question 6

Veins of the nasal cavity where drainage occurs

Answer 6

• Sphenopalatine
• Facial
• Ophthalamic

Question 7

Plexi where drainage ultimately occur?

Answer 7

• Pharygneal
• Pterygoid

Question 8

Kiesselbach’s area

Answer 8

• Anterior nasal septum
• Plexus of all 5 aa. supplying the septum

Question 9

Epitaxis

Answer 9

Nose bleed

Question 10

Minor epixatis comes from where?

Answer 10

Arterial or venous plexus

Question 11

Major epitaxis comes from where?

Answer 11

Likely sphenopalatine