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Published on Feb 16, 2024

A 25-year-old man falls while skateboarding and strikes the left side of his head against a concrete retaining wall. On physical examination only a minor scalp abrasion is present at the site of the impact, with minimal bleeding that stops in 3 minutes. He is initially alert following this accident, but then became unconscious 30 minutes later. A head CT scan reveals a convex, lens-shaped area of hemorrhage centered over the left parietal region. These events are most likely to be associated with damage to which of the following parts of the intracranial vasculature?

 Bridging veins

 Cavernous sinus

 Great vein of Galen

 Inferior cerebellar artery

 Middle meningeal artery

 Ophthalmic branch of external carotid artery