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The blood supply of the external nose and the nasal cavity is derived from anastomosing terminal branches of the internal and external carotid artery systems (see Image. Nasal Blood Supply). The blood supply of the external nose is provided primarily by the facial artery, particularly along the lateral aspect and in the lower one-third, with the anterior lateral nasal artery supplying the majority of blood flow to the nasal tip (see Image. Facial Artery).[1] Branches of the internal carotid artery perfuse the middle and upper third of the external nose with a contribution from the maxillary artery.[2] The blood supply of the nasal cavity is similarly convoluted. Still, its flow likewise ultimately stems from the carotid system, with the anterior lateral nasal artery traversing the nasal alar soft tissue and perfusing the anterior aspect of the lateral nasal wall while the posterior lateral nasal artery, a branch of the sphenopalatine artery, supplies the posterior aspect of the lateral nasal wall.[3]