1 — Marginal sinus; 2 — Occipital sinus; 3 — Straight sinus; 4 — Confluence of sinuses; 5 — Sigmoid sinus; 6 — Transverse sinus; 7 — Superior cerebral veins; 8 — Great cerebral vein; 9 — Inferior sagittal sinus; 10 — Superior sagittal sinus; 11 — Inferior petrosal sinus; 12 — Internal carotid artery; 13 — Sphenoparietal sinus; 14 — Optic nerve [II]; 15 — Cavernous sinus; 16 — Pituitary gland; 17 — Intercavernous sinus; 18 — Basilar plexus; 19 — Foramen magnum; 20 — Superior petrosal sinus; 21 — Aqueduct of midbrain; Cerebral aqueduct; 22 — Fourth ventricle; 23 — Occipital horn; Posterior horn; 24 — Temporal horn; Inferior horn; 25 — Central part; Body; 26 — Anterior horn; Ventral horn; 27 = 23 + 24 + 25+ 26 — Lateral ventricle; 28 — Interventricular foramen; 29 — Third ventricle; 30 — Superior bulb ofjugular vein
