1. Cerebellum
January 15, 2008

2. Cerebellum
Sagittal view

3. Cerebellum
Primary fissure
Posterolateral fissure

4. Cerebellum
Anterior lobe

5. Cerebellum
Posterior lobe

6. Cerebellum
Flocculo-nodular lobe

7. Cerebellum
Ventral surface
Cerebellar tonsils

8. Cerebellum
Ventral surface
Vermis
Cerebellar tonsils

9. Cerebellum
Dorsal surface
Vermis

10. Cerebellum
Vermis
Cerebellar tonsils

11. Cerebellum
Dorsal surface

12. Cerebellum
Cerebellar peduncles

13. Cerebellar Nuclei Cerebellar nuclei Emboliform nucleus Globose Nucleus
Dentate nucleus
Emboliform nucleus
Globose Nucleus
Fastigial nucleus
“ Don’t Eat Greasy Food”

14. Cerebellar Nuclei
Coronal view
4th Ventricle

15. Cerebellar Nuclei
Coronal view
Middle cerebellar peduncle
Pons

16. Cerebellar Nuclei Coronal view Cerebellar nuclei Dentate (eyebrows)
Fastigial (eyes)

17. Cerebellar Connections: simplified
Input: structures
Medulla: inferior cerebellar peduncle
Pons: middle cerebellar peduncle
Midbrain: superior cerebellar peduncle
Input: pathways
Vestibular system  fastigial nuclei (inferior ped.)
Corticopontine fibers  dentate nuclei (middle ped.)
Ventral spinocerebellar tract  interposed nuclei (inferior ped.)

18. Cerebellar Connections: simplified
Input: pathways
Vestibular system  fastigial nuclei (medial)
Corticopontine fibers  dentate nuclei (lateral)
Ventral spinocerebellar tract  interposed nuclei
Output: pathways (mainly superior ped.)
Fastigial nuclei  vestibular nuclei, reticular formation
Dentate nuclei  VL thalamus
Interposed nuclei  Red nucleus

19. Cerebellar Connections
Middle cerebellar peduncle
Pons  dentate nucleus
Superior cerebellar peduncle
Dentate  VL thalamus

20. Cerebellar Connections

21. Cerebellar Cortex White matter Gray matter Granular layer
Molecular layer
1.0 mm
Granule cells -- excitatory

22. Cerebellar Cortex White matter Gray matter Granular layer
Purkinje cell layer
Molecular layer
1.0 mm

23. Cerebellar Cortex
1.0 mm
Purkinje cells -- inhibitory

24. Cortical Connections

25. Cerebellar Blood Supply

26. Cerebellar Function Joystick Saccadic eye movement
Fine motor hand control

27. Tentorium Cerebelli