Human Growth and Development / Unit 5 HGD 0604 short lesson, about 20 seconds
The Brain at Six
Captions available
The idea
By six, a child's body weighs about thirty percent of an adult's, but the brain has reached about ninety percent of adult size.
In practice
Dendrites in early childhood two to three times as dense as the adult average.
Where people slip
Growth comes from axons, dendrites and synapses, above all myelination; stress and poor nutrition slow it, and early intervention can help.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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