Nose and Paranasal Sinuses Flashcards
These arteries supply the walls of the nasal cavity and nasal septum
Anterior and Posterior Ethmoidal Arteries (from ophthalmic artery of internal carotid artery)
This artery supplies most of the nasal mucosa, walls of the nasal cavity, nasal septum, and all 4 paranasal sinuses
Sphenopalatine artery (from maxillary artery of external carotid artery)
Sphenopalatine artery enters cavity through _______.
Sphenopalatine foramen
_______ supply blood to the hard palate then passes through the incisive canal to supply the anterior-inferior part of the nasal septum.
Greater Palatine arteries (Descending palatine of external carotid artery branches into greater and lesser palatine arteries)
Supply blood to the maxillary sinus
- Infraorbital
- Greater palatine
- Sphenopalatine
- Posterior alveolar
Supplies blood to the sphenoid sinus
Pharyngeal branch of external carotid artery
Supplies the anterior-inferior nasal septum
Septal branch of the superior labial artery of facial artery
Supplies the alar region
Lateral nasal branch of facial artery
Kiesselbach’s Area
- Anterior ethmoidal
- Sphenopalatine
- Greater palatine
- Septal branch of the superior labial arteries
Innervates the posterior inferior part of the nasal mucosa
Nasopalatine nerve of V2
Innervate the anterior superior part of the nasal mucosa
Anterior and posterior ethmoidal nerves (from the nasociliary nerve of V1)
Innervates the lateral nasal wall
Greater palatine nerves from V2
Innervates the anterior part of the nasal cavity
Anterior superior alveolar nerve from V2
Innervates the vestibule and alae
Infraorbital nerve from V2
Innervate most of the dorsum and apex of the external nose
Infratrochlear nerve and anterior ethmoidal nerve (from the nasociliary nerve of V1)
