1 — Basilar artery; 2 — Superior cerebellar artery; 3 — Ophthalmic nerve; Ophthalmic division [Va; V1]; 4 — Posterior communicating artery; 5 — Internal carotid artery; 6 — Diaphragm of sella turcica; 7 — Superior hypophysial artery; 8 — Infundibulum; 9 — Optic nerve [II]; 10 — Intercavernous sinus; 11 — Veins of hypophysis; 12 — Internal carotid artery, cavernous part; 13 — Abducent nerve; Abducens nerve [VI]; 14 — Cavernous sinus; 15 — Pituitary gland; 16 — Inferior hypophysial artery; 17 — Posterior lateral choroidal branches; 18 — Posterior cerebral
artery; 19 — Posterior medial choroidal branches
