Nasal Cavity

Question 1

Arterial Supply of Nasal Cavity

Answer 1

Maxillary and External carotid:

• sphenopalatine,
• greater palatine

Facial and External carotid:

• superior labial,
• lateral nasal arteries

Opthalmic and Internal carotid:
-anterior and posterior ethmoidal arteries

Question 2

Venous drainage of Nasal Cavity

Answer 2

• Veins follow the arteries
• Veins from maxillary artery drain into pterygoid plexus in the infratemporal fossa
• Anterior veins joins facial vein that follow ethmoidal arteries to drain into cavernous sinus

Question 3

Nerve innervation of Nasal Cavity

Answer 3

• Olfaction: olfactory nerve
• General sensation: trigeminal (anterior: opthalmic, posterior: maxillary)
• Anterior and posterior ethmoidal.
• Branches of maxillary. Facial (PS).
• Superior cervical sympathetic ganglion (S).

Question 4

Lymphatic drainage of the Nasal Cavity

Answer 4

Submandibular nodes (anteriorly). Deep/Upper cervical nodes (posteriorly).