<prompt> Which is not true about cranial dura mater?It has endosteal and meningeal layersIt is supplied by 5th cranial nerveIt is the outermost meningeal layerDural venous sinuses are present inner to the meningeal layer  <response>: The periosteal and meningeal layers split to enclose the dural venous sinuses. Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 187 