The anterior meningeal artery is a branch of the vertebral artery, supplying the dura, ligamentous and some bony structures of the surrounding of the upper cervical spine and foramen magnum 1.
Gross anatomy
Origin
V2 segment of the vertebral artery, usually near C2/3, from where it passes medially through the intravertebral foramen of C2/3, anterior to the dural sheath of the third cervical nerve root with the surrounding vertebral veins. It then courses dorsal to the posterior longitudinal ligament and ventral to the anterior internal vertebral venous plexus and eventually passes anterior to the odontoid process of C2.
Termination
After ascending to the foramen magnum, enters the hypoglossal canal to anastomose with the ascending pharyngeal artery.
Supply
Supplies the superior posterior longitudinal ligament, tectorial membrane and the odontoid process of the axis via small perforators. Its supply to dura is primarily in the foramen magnum and to a small extent the upper cervical region.
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