The Iinferior labial artery (inferior labial branch of facial artery) arises near the angle of the mouth

Mouth

The mouth is the first portion of the alimentary canal that receives food andsaliva. The oral mucosa is the mucous membrane epithelium lining the inside of the mouth....

; it passes upward and forward beneath the Triangularis and, penetrating the Orbicularis oris, runs in a tortuous course along the edge of the lower lip between this muscle and the mucous membrane.

It supplies the labial glands

Labial glands

The labial glands are situated between the mucous membrane and the Orbicularis oris, around the orifice of the mouth.They are circular in form, and about the size of small peas; their ducts open by minute orifices upon the mucous membrane....

, the mucous membrane

Mucous membrane

The mucous membranes are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line cavities that are exposed to the external environment and internal organs...

, and the muscles of the lower lip

Lower lip

The lower lip covers the anterior body of the mandible.It is lowered by the Depressor labii inferioris muscle....

; and anastomoses with the artery of the opposite side, and with the mental branch of the inferior alveolar artery

Inferior alveolar artery

- Course :It descends with the inferior alveolar nerve to the mandibular foramen on the medial surface of the ramus of the mandible.It runs along the mandibular canal in the substance of the bone, accompanied by the nerve, and opposite the first premolar tooth divides into two branches, incisor and...

.

External links

- "Superficial arteries of the face."

• http://www.dartmouth.edu/~humananatomy/figures/chapter_47/47-5.HTM