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The Endowment for Human Development
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Cerebral Hemispheres


5 weeks, 2 days

From The Biology of Prenatal Development.Buy Now

Script: Between 4 and 5 weeks, the brain continues its rapid growth and divides into 5 distinct sections.

The head comprises about 1/3 of the embryo's total size.

The cerebral hemispheres appear, gradually becoming the largest parts of the brain.

Functions eventually controlled by the cerebral hemispheres include thought, learning, memory, speech, vision, hearing, voluntary movement, and problem-solving.

All ages referenced to fertilization, not last menstrual period.
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The Limbs Bud
The Limbs Bud
Transparent Skin
Transparent Skin
Cerebral Hemispheres
Cerebral Hemispheres
The Yolk Sac
The Yolk Sac
The Liver and Heart
The Liver and Heart
Hand Plates and Cartilage
Hand Plates and Cartilage
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