face, nasal

Nasal cavity – blood supply

  • Sphenopalatine a.
    • largest branch of the 3rd part of the maxillary a. as it courses into the pterygopalatine fossa
    • bifurcates into septal and lateral nasal wall branches
    • courses with the nasopalatine n., a branch of V2
    • anastomoses anteriorly with branches from anterior and posterior ethmoidal aa. from ophthalmic a. in the orbit
    • anastomoses anterior-inferiorly with greater palatine a. (a branch of descending palatine a. from the maxillary a.) within the incisive foramen of the hard palate