<prompt> Pain insensitive structure in brain isFalx cerebriDural she ath surrounding vascular sinusesMiddle meningeal aeryChoroid plexus  <response>: Pain Insensitive structures in Brain :Brain parenchymaEpendymaChoroid plexusPia matterArachnoidDura over convexity of skull Dura around vascular sinuses and vessels is sensitive to painPain Sensitive structures in Brain :Cranial venous sinuses with afferent veinsAeries at base of brain and aeries of dura including middle meningeal aery.Ref: Gray;s anatomy, page 404 