1 — Superior bulb ofjugular vein; 2 — Sigmoid sinus; 3 — Basal vein; 4 — Mastoid emissary vein; 5 — Occipital vein; 6 — Confluence of sinuses; 7 — Occipital emissary vein; 8 — Straight sinus; 9 — Great cerebral vein; 10 — Superior sagittal sinus; 11 — Internal cerebral vein; 12 — Inferior sagittal sinus; 13 — Parietal emissary vein; 14 — Superior thalamostriate vein; 15 — Superior cerebral veins; 16 — Interventricular foramen; 17 — Frontal emissary vein; 18 — Sphenoparietal sinus; 19 — Superior ophthalmic vein; 20 — Angular vein; 21 — Cavernous sinus; 22 — Inferior ophthalmic vein; 23 — Venous plexus of foramen ovale; 24 — Pterygoid plexus; 25 — Facial vein; 26 — Retromandibular vein; 27 — Internal
jugular vein
