Part 15: Childcare
15The brain develops in the early stages of embryonic growth, forming neurons and synapses. It undergoes several systematic restructurings, including the formation of new neurons and connections, and planned cell death. Most of this restructuring takes place before the brain is 2 years old, but is not complete until after 25 years or more. The second phase, in which grey matter peaks and declines and white matter suffuses the remainder happens during early adolescence. The last region to mature is the medial prefrontal cortex (MPFC)
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