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Exploration of those parts of the brain supplied by the posterior cerebral artery

Looping fibers from stratum zonale of thalamus radiating into temporal and occipital lobes

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Image #20-5
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Exploration of those parts of the brain supplied by the posterior cerebral artery
Looping fibers from stratum zonale of thalamus radiating into temporal and occipital lobes
The tapetum (approximately 1 mm. thick) has been removed and remnants of the tail of the caudate nucleus scraped away from the roof of the inferior horn of the ventricle. The stria terminalis remains in place (15). The fibers (16) uncovered by this dissection can be followed to the stratum zonale covering the superior surface of the thalamus. As these fibers are traced posteriorly around the convex surface of the thalamus they pass beneath the stria terminalis to radiate into the temporal and occipital lobes. Note the formation of sharp loops in the radiation of these fibers.
  1. Corpus callosum (splenium)
  2. Cerebral aqueduct
  3. Medial geniculate body
  4. Cerebral peduncle
  5. Optic tract
  6. Oculomotor nerve (III)
  7. Basilar artery (cut across at its termination)
  8. Choroidal artery (anterior) (cut off)
  9. Posterior communicating artery
  10. Middle cerebral artery
  11. Tapetum (cut across)
  12. Fornix (crus) (cut across)
  13. Caudate nucleus (tail)
  14. Pulvinar
  15. Stria terminalis
  16. Radiating fibers from stratum zonale thalami looping into temporal and occipital lobes
  17. Lateral geniculate body
  18. Ventricular surface of amygdala
  19. Amygdaloid nucleus (dissected)
  20. Anterior perforated substance