cribiform plate=CN I, optic canal= CNII, superior orbital fissure=CN III,IV, V1,VI, foreamen rotundum= CNV2, foreamen ovale= CNV3, foreamen spinosom=middle meningeal av, Foramen lacerum= internal carotid passes by, internal auditory meatus= CN VII, VIII, jugular foreamen= CNIX,X,XI, internal jug Foreamen magnum= vertebraal a, CNXI ascends, hypoglossal canal= CNXII