Kiesselbach’s area.

Branching from the maxillary artery, thesphenopalatine artery enters the nasal cavity via the sphenopalatine foramen and supplies the septal wall of the cavity. Entering through the orbit, the septal branches of the anterior and posterior ethmoidal arteries (branches of the ophthalmic artery) gives supply to the roof as well as the septal wall of the cavity as it travels to Little’s area. 

The facial artery gives off the superior labial artery; the septal branch of which enters the nasal cavity through the nares and joins the anastomoses in Little’s area. The greater palatine artery, a terminal branch of the maxillary artery, passes through the greater palatine foramen and travels along the hard palate to enter the nasal cavity by way of the incisive canal, thus joining the anastomosis in Kiesselbach’s area.