It gives a branch to the lacrimal sac before bifurcating into two branches: one branch anastomoses with the terminal (angular) part of the facial artery and is important for the blood supply of the face; the other travels along the dorsum of the nose to supply the outer surface of the nose, and forms anastomoses with its contralateral fellow, and with the lateral nasal branch of the facial artery.
It provides a branch to the lacrimal sac before splitting into two branches: one branch anastomoses with the terminal (angular) part of the facial artery and is crucial for the face's blood supply; the other travels along the dorsum of the nose to supply the outer surface of the nose, and forms anastomoses with its opposite counterpart, and with the lateral nasal branch of the facial artery.