<prompt> Aery deep to Pterion?Frontal aeryTemporal aeryMiddle meningeal aeryParietal aery  <response>: The pterion is the region where the frontal, parietal, temporal, and sphenoid bones join together. It is located on the side of the skull, just behind the temple. Aery crossing behind it is Middle meningeal aery. Injury at this site can lead to EDH. 