The brain originates in the... Correct answer prenatal neural plate
Neurogenesis correct answer proliferation of neurons through cell division// occurs from 3/4th week -18 weeks
Neural migration correct answer move
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The brain originates in the... Correct answer prenatal neural plate
Neurogenesis correct answer proliferation of neurons through cell division// occurs from 3/4th week -18 weeks
Neural migration correct answer movement of new cells to the cortex// 8-15 weeks after conception
Differentiation correct answer specialization of cells, based on location// 1625 weeks after conception
Synaptogenesis correct answer proliferation of synapsis// prenatal period through 8-9 weeks
Synaptic pruning correct answer elimination of unused synapses// prenatal period through early adolescence
The newborn brain correct answer - about 25% of adult size, uneven in maturity
- Only lower portions of ns are developed (spinal cord, brain stem, and cerebellum)
- Higher regions (cerebrum) are rather primitive
- Development of "thinking" brain requires more connections and sheathing
Myelination correct answer myelin and coats the axons and speeds brain processing// prenatal period through late adolescence
By 24 months correct answer brain is about 75% adult weight opposed to 25% as infants
Brain development: infancy and childhood- synaptogenesis correct answer process by which neurons form synapses with other neurons, resulting in trillions of connections// occurs prenatally with rapid development during first two years of birth // by 2, cortex has over a hundred trillion synapses
What determines which synapses are maintained and which are pruned? Correct answer experience- inactive synapses are eliminated
Sleep correct answer REM sleep needed for brain development
Nutrients correct answer - breast milk recommended for first 12 months
- need high level of fat until about 2 years of age
Stimulation correct answer - experience fine tunes circuits in the developing brain
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