X CLOSE

Exploration of the meninges and brain in situ

Branches of posterior communicating artery within basal cisterns

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Image #3-2
Diagram Image
Legend Image
Exploration of the meninges and brain in situ
Branches of posterior communicating artery within basal cisterns
The brain stem has now been cut across through the rostral part of the mesencephalon, the optic tract removed and the optic chiasm lifted somewhat out of its normal position. Numerous small arterial branches of the posterior communicating and posterior cerebral arteries which pass into the hypothalamus and interpeduncular fossa cross the basal cisterns (cisternae chiasmatis et interpeduncularis). Nearly the entire extent of the third ventricle is visible.
  1. Olfactory tract (cut across)
  2. Inferior cerebral vein
  3. Lesser wing sphenoid bone (covered by dura)
  4. Middle cerebral artery (cut across)
  5. Anterior cerebral artery left
  6. Internal carotid artery
  7. Chiasmatic cistern
  8. Upper pointer: Choroidal artery (anterior) (cut across) Lower pointer: Posterior communicating artery
  9. Optic tract (cut across and lifted up)
  10. Oculomotor nerve (III)
  11. Posterior cerebral artery
  12. Branch of posterior cerebral artery to brain stem (lateral central branch)
  13. Tributaries of basal vein which passed into tip of inferior horn of lateral ventricle
  14. Substantia nigra
  15. Red nucleus
  16. Basal vein [Rosenthal]
  17. Tentorium cerebelli
  18. Continuation of main trunk of posterior cerebral artery
  19. Anterior cerebral artery right
  20. Falx cerebri
  21. Cingulate gyrus
  22. Pericallosal branch of anterior cerebral artery
  23. Anterior commissure
  24. Free part of column of fornix
  25. Ventricular surface of hypothalamus
  26. Mamillary body (cut across)
  27. Massa intermedia
  28. Cerebral peduncle
  29. Internal cerebral vein
  30. Cerebral auditory aqueduct
  31. Posterior commissure
  32. Corpus callosum (splenium)