The Human Brain During the Third Trimester

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Central lobe (Folium)


FFo lium/Tuberolium/Tuber


Central lobe cleft
(The medullary layer reaches all the way
to the external germinal layer)

Migrating small Purkinje cellsMigrating small Purkinje cells


Settling small Purkinje cellsSettling small Purkinje cells


Granule cells
(migrating)

Granule cells
(migrating)

External
germinal layer
(proliferative
zone)

External
germinal layer
(proliferative
zone)

External
germinal layer
(premigratory
zone)

External
germinal layer
(premigratory
zone)

Molecular layer


Granule cell layer


Purkinje cell layer:
(scattered immature
Purkinje cells migrating
and settling)

GW32 Sagittal


CR 270 mm


Y15-60


Level 1:


Section 801


CEREBELLUM


Medullary laMedullary layeyerr


External germinal layerExternal germinal layer


Granule cell laGranule cell layeyerr


Molecular laMolecular layeyerr


See the entire Section


in Plate 96.


A medium-


magnification view of


the cerebellum is in


Plates 102A and B.


PLATE 109

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