78 - Nasal cavity - nerves & vessels Flashcards
Arterial Supply of the Nasal Cavity
Identify 1 → 4
- Sphenopalatine a.
- Posterior ethmoid a.
- Anterior ethmoid a.
- Greater palatine a.
Arterial Supply of the Nasal Cavity
Identify 1 → 4
- Sphenopalatine a.
- Posterior ethmoid a.
- Anterior ethmoid a.
- Greater palatine a.
Arterial Supply of the Nasal Cavity
Identify 5
- Septal branch of superior labral a.
Arterial Supply of the Nasal Cavity
Source of Anterior ethmoid artery
Ophthalmic a.
Arterial Supply of the Nasal Cavity
Anterior ethmoid artery
→ travels with nasociliary n. through (1)____ and enters anterior cranial fossa, where it gives rise to meningeal branch and nasal branches that descend into nasal cavity to supply (2) ___ and ____ before giving rise to external nasal a., which supplies nose
- anterior ethmoidal foramen
- lateral wall and septum of nose
Arterial Supply of the Nasal Cavity
Source of POSTERIOR ethmoid artery
Ophthalmic a.
Arterial Supply of the Nasal Cavity
Posterior ethmoid artery
→ Travels through posterior ethmoidal foramen to enter anterior cranial fossa, where it gives rise to (1)____ and ____ that descend into nasal cavity through (2)____ to supply part of lateral wall near superior nasal concha and posterosuperior portion of nasal septum
- meningeal branch and nasal branches
- cribriform plate
Arterial Supply of the Nasal Cavity
Source of Sphenopalatine a.
3rd part of maxillary a.
Arterial Supply of the Nasal Cavity
Sphenopalatine a.
→ After passing through sphenopalatine foramen, enters nasal cavity where it gives rise to ____
posterosuperior nasal branches
Arterial Supply of the Nasal Cavity
septal branch of superior labial artery travels along (1)____
→ it is a major blood supply to (2)___
- Nasal septum
- Anterior part of nasal septum
Arterial Supply of the Nasal Cavity
Sphenopalatine a.
→ Posterosuperior lateral branch supplies ____ (3)
→ posterosuperior medial branch continues along _____
→ nasal concha, mucous membranes, and lateral wall
→ nasal septum (to enter hard palate via incisive canal)
Arterial Supply of the Nasal Cavity
Sphenopalatine a.
→ posterosuperior medial branch continues along nasal septum to enter _____
hard palate via incisive canal
Arterial Supply of the Nasal Cavity
Source of Greater palatine artery
3rd part of maxillary artery
Arterial Supply of the Nasal Cavity
Greater palatine a.
→ Descending palatine travels in palatine canal, where it divides into (1)____ and ____, which anastomoses with terminal branch of (2)____, which exits incisive foramen
- lesser palatine a. and greater palatine a.
- sphenopalatine a.
Arterial Supply of the Nasal Cavity
Source of septal branch of superior labial artery
Facial artery
Sensory Innervation of the Nasal Cavity
→ Identify 1 - 2
- External nasal branches of anterior ethmoid n.
- Lateral internal nasal branch of anterior ethmoid n