Posterior Meningeal Branch of the Vertebral Artery, Inferior View

Description

Oriented from an inferior perspective, the posterior surface of the brainstem and posterior cranial fossa contents are presented with the vertebral arteries approaching the foramen magnum and giving rise to a posterior meningeal branch that turns toward the dura. The vessel courses posteriorly and laterally along the margins of the posterior fossa, in close relationship to the medulla oblongata and adjacent to the dural reflections overlying the cerebellar hemispheres. Cranial nerves emerge as paired bundles from the ventral brainstem and pontomedullary junction, their roots lying medial and anterior to the meningeal arterial twig as it leaves the parent vertebral artery. Color coding separates arterial from venous pathways. Clean and readable. Attention to the posterior meningeal branch matters because it is a small but clinically consequential dural feeder in the posterior cranial fossa, commonly encountered as a contributor to posterior fossa dural arteriovenous fistulas and as a potential source of bleeding in skull base and foramen magnum surgery. Surgeons working around the far lateral and transcondylar corridors use the vertebral artery as a landmark, and recognizing where meningeal branches depart helps avoid traction, coagulation injury, or misidentification during dural opening and epidural dissection. This inferior angle also clarifies how dural vascularity relates to lower cranial nerve rootlets and the vertebrobasilar junction, a frequent point of confusion when learners transition from textbook diagrams to operative anatomy. Use this artwork in neuroanatomy and head and neck anatomy teaching blocks to reinforce vertebrobasilar circulation, meningeal supply of the posterior cranial fossa, and cranial nerve emergence from the brainstem, and in neurosurgery or neuroradiology publications discussing posterior fossa dural AVFs, foramen magnum approaches, or vertebral artery exposure and control. Anatomical accuracy verified by SciePro's Medical Advisory Board.