Accessory meningeal artery
The accessory meningeal artery (also accessory branch of middle meningeal artery, pterygomeningeal artery, small meningeal or parvidural branch) is a branch of the maxillary artery, sometimes derived from the middle meningeal artery.
Only about 10% of the blood flowing through this artery reaches intracranial structures. 
- Dilenge D, Géraud G. "Accessory meningeal artery". Acta Radiol Suppl. 347: 63–9. PMID 207149.
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