INFERIOR ALVEOLAR ARTERY

 

ORIGIN: Maxillary artery.

COURSE/DISTRIBUTION: The artery springs from the maxillary artery, which in turn comes from the external carotid artery. It descends posterior to the inferior alveolar nerve on the medial surface of the ramus of the mandible. It gives off a lingual branch just after its origin. It then lies between the mandible and the sphenomandibular ligament. It reaches the mandibular foramen after it has given off the mylohyoid branch, which supplies the mylohyoid and the anterior belly of digastric.  It then runs in the mandibular canal, accompanied by the inferior alveolar nerve. Opposite the first premolar tooth, it divides into its two terminal branches, which are the incisor and the mental branches. This supplies the lower jaw. 

BRANCHES:

  • Lingual branch
  • Incisor branch
  • Mental branch

 

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