| 释义 | (cranial) extradural space(cranial) extradural space[TA] space between the cranial bones and the external periosteal layer of the dura; it becomes an actual space only pathologically, as when as extradural or epidural hemorrhage occurs forming a hematoma.(cra·ni·al) ex·tra·du·ral space(krānē-ăl ekstră-durăl spās) [TA] Area between cranial bones and external periosteal layer of the dura; becomes an actual space only pathologically, as when as extradural or epidural hemorrhage occurs forming a hematoma. |