The cerebellum is divided into three subdivisions: the archicerebellum, paleocerebellum, and neocerebellum. It contains nuclei and receives connections from the inferior cerebellar peduncle and cerebellar peduncles. The cerebellum is composed of cells like Purkinje cells, climbing fibers, and mossy fibers. The archicerebellum maintains trunk equilibrium and tone, the paleocerebellum controls limb posture and movements, and the neocerebellum coordinates skilled movements. Blood is supplied by the superior, anterior inferior, and posterior inferior cerebellar arteries. Cerebellar syndromes can result from trauma, vascular issues, or tumors.

1. Cerebellum
Dr. Suresh Managutti
Associate Professor
Department of Anatomy
SDMCMSH, Dharwad

2. Cerebellum

5. Subdivisions of cerebellum

10. Parts
• Archicerebellum
• Paleocerebellum
• Neocerebellum

11. Nuclei

12. Connections of cerebellum

13. Inferior cerebellar peduncle

14. Cerebellar peduncles

15. Histology

16. Cells of cerebellum

17. Climbing and Mossy fibres

18. Functions
• Archicerebellum- maintenance of equilibrium , tone and posture of
trunk ,muscles
• Paleocerebellum- posture and crude movements of limbs
• Neocerebellum- coordination of smooth skilled movements

19. Blood supply
• Superior cerebellar artery
• Anterior inferior cerebellar artery
• Posterior inferior cerebellar artery

20. Clinical anatomy
• Cerebellar syndrome – trauma, vascular occlusion, tumors
• Archicerebellum- truncal ataxia and staggering gate, nystagmus –
Romberg’s sign
• Paleocerebellum- hypotonia, asthenia of limb muscles . Unstable
joints, pendular knee jerk, ataxia- inability to maintain balance while
walking
• Neocerebellum- dysmetria- past pointing, FN confrontation test,
intention tremors, adiadochokinesia/disdiadochokionesia- inability to
do alternate supination, pronation , dysarthria- scanning speech,
Rebound phenomenon