middle meningeal nerve middle meningeal nerve the middle meningeal nerve (meningeal or dural branch) is given off from the maxillary nerve (cn v2) directly after its origin from the trigeminal ganglion, before cn v2 enters the foramen rotundum. middle meningeal nerveleft parietal bone. inner surface. (nerve not labeled, but grooves visible at bottom.)detailsinnervatesmeningesidentifierslatinnervus meningeus mediusta98a14.2.01.038ta26217fma52728anatomical terms of neuroanatomy it accompanies the middle meningeal artery and vein as the artery and vein enter the cranium through the foramen spinosum and supplies the dura mater. additional images left temporal bone. inner surface.