Nasal septum branch of superior labial artery

Overview

 * The blood supply of the mucosa of the nasal septum is derived mainly from the maxillary artery.
 * The sphenopalatine artery, a branch of the maxillary, supplies most of the blood of the nasal mucosa.
 * It enters by the sphenopalatine foramen and sends branches to the posterior regions of the lateral wall and to the nasal septum.
 * The greater palatine artery, also a branch of the maxillary, passes through the incisive foramen to supply the nasal septum.
 * The anterior and posterior ethmoidal arteries, branches of the ophthalmic artery, supply the anterosuperior part of the mucosa of the lateral wall of the nasal cavity and nasal septum.
 * Three branches of the facial artery (superior labial, ascending palatine, and lateral nasal) also supply the anterior parts of the nasal mucosa.