Quick Facts
Origin: Near the midpoint of the orbicularis oris muscle.
Course: Courses laterally along the lower lip to drain into facial vein.
Tributaries: None.
Drainage: Lower lip.
Related parts of the anatomy
Origin
The inferior labial veins originate close to the midpoint of the orbicularis oris muscle in the lower lip region.
Course
The inferior labial vein courses along the lower lip to drain into the facial vein near the lateral angle of the mouth.
Tributaries
The inferior labial vein anastomosis with the inferior labial vein of the opposite side. Additionally, it may anastomose with the mental branch of the inferior alveolar vein before running laterally and emptying into the facial vein.
Structures Drained
The inferior labial vein drains the region of the lower lip.
Learn more about this topic from other Elsevier products
Vein
A venous sinus is a vein with a thin wall of endothelium that is devoid of smooth muscle to regulate its diameter.
