Blood supply of the meninges
The blood supply of the meninges generally concerns the blood supply of the outer layer of dura mater rather than the inner layer of dura mater, arachnoid or pia mater which do not require a large blood supply. There are several arteries that supply the dura in the anterior, middle, and posterior cranial fossae .
Anterior cranial fossa
- meningeal branches of
- frontal branch of the middle meningeal artery (which enters the middle cranial fossa via the foramen spinosum)
Middle cranial fossa
- frontal and parietal branches of the middle meningeal artery
- accessory meningeal artery
- ascending pharyngeal artery
- branches directly from the internal carotid artery
The supratentorial dura mater is primarily supplied by the middle meningeal artery. This is a branch of the maxillary artery, which, despite its name, primarily supplies the calvarium rather than the meninges . Clinical importance is given to this artery due to its location in the extradural space and the proximity of its anterior division to the pterion, making it susceptible to damage in head injuries .