Anatomical Features, Blood Supply, and Nerve Innervation of the Nasal Septum and Lateral Wall of the Nose

Blood Supply to the Lateral Wall of the Nose

The lateral wall of the nose is richly supplied by multiple arteries that ensure adequate perfusion and functionality. The primary arterial sources include branches of both the external carotid artery and internal carotid artery.

Major Arterial Supply

• Sphenopalatine artery: This is the main artery supplying the lateral nasal wall, originating from the maxillary artery.
• Greater palatine artery: A branch of the maxillary artery, it contributes to the vascularization of the lateral wall.
• Superior labial artery: Branching from the facial artery, it supports the lower part of the lateral wall.
• Including the anterior and posterior ethmoidal arteries, which supply the upper lateral nasal wall.

Clinical Significance

A thorough understanding of the nasal blood supply is crucial for surgeons performing procedures such as septoplasty, sinus surgery, and rhinoplasty to prevent excessive bleeding.