Arteries of the nasal cavity (English)

The lateral wall and nasal septum of the nasal cavity receive arterial supply from five main arteries: the anterior and posterior ethmoidal arteries (ophthalmic artery), the sphenopalatine and greater palatine arteries (maxillary artery) and the septal branch of the superior labial artery (facial artery). The anterior and posterior ethmoidal and sphenopalatine arteries divide into lateral and septal branches as they enter the nasal cavity, while the greater palatine artery enters the nasal cavity via the incisive canal of the hard palate. The septal branch of the superior labial artery does not give off any named branches and terminates by anastomosing with the anterior septal branches of the anterior ethmoidal artery. These arteries collectively supply the ethmoidal and frontal sinuses, the roof of the nasal cavity as well as the mucosa of the nasal conchae, the nasal meatuses and the nasal septum. All 5 arteries anastomose in an arterial plexus located in the anterior nasal septum termed the Kiesselbach area. This region is a common site for nose bleeds (epistaxis).