08Prenatal Brain Development

prenatal brain development

differentiation of stem cells

prenatal brain development

begins in the 3rd gestational week

neural plate

location of stems cells in the embryo

3rd week

when 2 ridges appear along the neural plate, forming neural grove then neural tube

neural tube

BRAIN'S VENTRICLES & SPINAL CANAL formed by the open region in the center of the _______

8th week (embryonic period)

when the neural tube has further differentiated into the forebrain, midbrain, and hindbrain

fetal period

period where brain development involves neuron production, migration, and differentiation

neurogenesis

formation of neurons

neurogenesis

this is largely completed after 5 months of gestation

hippocampus

this continues to develop neurons throughout life

hippocampus

exception in neurogenesis

neocortex

layer of the cells that lie on the surface of the brain

neural migration

process that is mostly completed in the cerebal cortex

24 weeks

when neural migration is completed

gray matter

regions of the brain that contain the cell bodies

white matter

axons that form the neural pathway

myelin

white matter are covered in ______ which gives them a white appearance

myelin

fatty substance that covers the axon

myelin

aids in both the insulation and efficiency of neural transmission