Neurodevelopment Flashcards
what is neuronal proliferation?
creation of new neuron by massive mitosis
what is neuronal migration
distribution of precursor cells to areas where they will ultimately be
what is neuronal determination
when it is decides what kind of cell it will be (glia or neurons)
what is neuronal differentiation
the process of becoming the type of neuron meant to be
what is synaptogenesis
create massive connections among neurons by increasing arborizations
what is pruning
get rid of connections that are not needed
when does neuronal proliferation happen?
prior to birth: starts around week 5 and extends well into 3rd trimester
process of creating neurons before birth
corticogenesis
the ventricular zone is
where neurons are created
what do radial glial cells do?
provide the path through which neurons travel to where they must be
how is the cortex built
inside out
neurons that are created close by in the VT …
will be close by in the cortex
when does synaptogenesis happen
starts before birth (second trimester) and peaks around 15 months after birth
lobes that fully develop until mid twenties
frontal lobes
brain becomes … as we age
thinner