Arterial Anastomosis of the Nose

Description

Oblique lateral facial anatomy centers on the external nose and nasal septum, where the arterial anastomosis converges in the anterior septal region of Kiesselbach’s plexus (Little’s area). Branches consistent with the facial artery system ascend along the nasolabial fold as the angular artery toward the medial canthus, while dorsal nasal and supratrochlear distributions track superiorly across the bridge of the nose and forehead. Along the lateral nasal wall, small arterioles interweave between the alar region inferiorly and the dorsum superiorly, with venous counterparts shown in blue running parallel and slightly more superficial. Midline septal vessels sit medial to the paired lateral nasal networks. Epistaxis is the obvious clinical tie-in. Kiesselbach’s plexus is the common source of anterior nosebleeds because multiple arterial territories meet in a thin mucosa over cartilage, and this crossing of internal and external carotid contributions explains why bleeding can be brisk and recurrent. The angular and dorsal nasal pathways also matter in facial trauma and laceration repair, where vessel orientation guides hemostasis and helps avoid compromising skin flaps around the alar rim and nasal sidewall. Small vessels, big consequences. Teaching applications include head and neck anatomy labs, ENT-focused epistaxis modules, and procedural training materials that compare anterior versus posterior bleeding sites and their arterial sources. It also fits well in facial reconstructive surgery texts discussing local flap design (nasolabial, bilobed, paramedian forehead) and the vascular basis of pedicles in the perinasal region. Anatomical accuracy verified by SciePro's Medical Advisory Board.