3-vesicle stage
5-vesicle stage
Cerebral
hemisphere
Lateral
ventricle
Forebrain
Midbrain
Diencephalon
Midbrain
3rd
ventricle
Hindbrain
Pons &
Cerebellum
Cerebral
aqueduct
Medulla
4th
ventricle
Spinal cord
Central
canal
Cephalic
flexure
…by the 5 vesicle stage, all
7 major
brain divisions are present