Exploration of the brain from the medial aspect

Hippocampus, fimbria, crus of fornix, inferior and posterior horns of lateral ventricle

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Image #18-7

Exploration of the brain from the medial aspect

Hippocampus, fimbria, crus of fornix, inferior and posterior horns of lateral ventricle

The inferior horn of the lateral ventricle was widely opened by cutting away the sublenticular and retrolenticular parts of the internal capsule and much of the amygdaloid nucleus. The specimen is viewed somewhat from in front so that the posterior horn of the ventricle is visible. The tapetum and occipital radiation of the corpus callosum are seen in relation to this horn.

1. Radiation corpus callosum
2. Internal capsule
3. Claustrum
4. External capsule
5. Posterior part of anterior commissure
6. Middle cerebral artery and lateral striate arteries
7. Superior longitudinal fasciculus
8. Corona radiata
9. Tapetum (cut across)
10. Posterior horn lateral ventricle
11. Bulbus posterior horn
12. Fornix (crus) (cut across)
13. Corpus callosum (splenium)
14. Posterior cerebral artery (passing into calcarine fissure)
15. Hippocampal fissure
16. Fimbria of hippocampus
17. Hippocampal gyrus
18. Hippocampal digitations
19. Uncus (hippocampal gyrus)