PMC

Anterior view of the amputated nose and upper lip midface segment. The superior labial arteries were found bilaterally within the upper lip. The left dorsal nasal artery, a branch of the angular artery, was identified on the cranial aspect of the nose. Micro-clamps were placed to mark the arteries on the back table in the operating room to prepare the nose for replantation while the patient was placed under general anesthesia.

Cerebral and ocular vascularization.
a. Cerebral vascularization. 1: anterior cerebral artery; 2: middle cerebral artery; 3: anterior communicating artery; 4: artery internal carotid; 5: common carotid artery; 6: superficial temporal artery; 7: ophthalmic artery; 8: supraorbital artery; 9: artery supratrochlear; 10: median palpebral artery; 11: dorsal artery of the nose; 12: lateral palpebral artery; 13: angular artery; 14: artery lacrimal; 15: transverse facial artery; 16: maxillary artery; 17: middle meningeal artery; 18: facial artery; 19: external carotid artery.
b. Vascularization of the eyeballs by ophthalmic artery, which is a branch of the internal carotid artery.
(from Vignal-Clermont C, Tilikete C, Milea D. Neuro-ophtalmologie. 2e edition, 2016, Elsevier)

(A) Arterial supply of the nose (variation 4): the alar artery (a.a.) is seen to anastamose with the dorsal nasal artery (d.n.a.) which remains of large bore and runs down to the nasal tip to enter into the dense alar and tip plexus. (B) Arterial supply of the nose (variation 2): the alar artery (a.a.) continues around the alar groove giving off branches in a cascade fashion that ultimately supply the alar and tip plexus. The columellar artery (c.a.) runs beneath the nostril sill to the base of the columellar. FA, facial artery. Images reproduced with permission from the Annals of Academy of Medicine Singapore.

Variations in the arterial supply of the oriental nose: findings in 20 facial arteries. a.a., alar artery; C, cartilage; c.a., columellar artery; d.a.p., deep areolar plane; d.n.a, dorsal nasal artery; FA, facial artery; FM, fibromuscular layer; ILA, inferior labial artery; S, skin envelope; SLA, superior labial artery; s.a.p., subcutaneous areolar plane. Image reproduced with permission from the Annals of Academy of Medicine Singapore.