cerebellum small brain fissures of cerebellum

CerebellumCerebellum

Small brainSmall brain

Fissures of cerebellum

Lobules of Superior vermis

1-lingula 2-central 3-culmen 4-declive 5-foilum

Lobules of inferior vermis

1-tuber 2-pyramid 3-uvula 4-nodule

Lobules of Superior vermis and hemisphere

1-lingula 2-central…………..Ala 3-culmen………….quadrangular 4-declive…………..simplex 5-foilum……………superior semilunar

Lobules of inferior vermis and hemisphere

1-tuber…………..inferior semilunar 2-pyramid………biventral 3-uvula………….tonsile 4-nodule………..floculus

Fissures of cerebellum

1- primary fissure 2- horizontal fissure 3- postrolateral fissure

Division of cerebellumDivision of cerebellum

Based on morphologyBased on morphology

1- anterior lobe1- anterior lobe

2- middle/posterior lobe2- middle/posterior lobe

3-floculonodular3-floculonodular

Division of cerebellumDivision of cerebellum

Based on developmentBased on development

1- Archiocerebellum (lingula + floculonodular).1- Archiocerebellum (lingula + floculonodular).

2- Paleocerebellum(ant. Lobe – lingula + pyramid 2- Paleocerebellum(ant. Lobe – lingula + pyramid and uvula)and uvula)

3-neocerebellum( post. Lobe – pyramid and uvula).3-neocerebellum( post. Lobe – pyramid and uvula).

Division of cerebellumDivision of cerebellum

Based on physiologyBased on physiology

1- vestibulocerebellum1- vestibulocerebellum

2- spinocerebellum2- spinocerebellum

3-pontocerebellum3-pontocerebellum

Cross section of cerebellum

Gray mater 1- cortex 2-deep nuclei (intracrebellar nuclei)

White mater 1- lamina alba 2- corpus medullaris

Corpus medullaris

1- proper fibers ( association and commisural)

2- projecting fibers (cerebellar peduncles)