1 — Superior sagittal sinus; 2 — Confluence of sinuses; 3 — Straight sinus; 4 — Occipital sinus; 5 — Marginal sinus; 6 — Basilar plexus; 7 — Superior ophthalmic vein; 8 — Intercavernous sinus; 9 — Sphenoparietal sinus; 10 — Cavernous sinus; 11 — Middle meningeal vein; 12 — Venous plexus of foramen ovale; 13 — Inferior petrosal sinus; 14 — Superior petrosal sinus; 15 — Superior bulb of jugular vein; 16 — Sigmoid sinus;
17 — Transverse sinus
