Stages of Neuronal Development

Question 1

Stages of Neuronal Development

Answer 1

Neurogenesis

2) Cell Migration
3) Cell Differentiation
4) Synpatogenesis
5) Neuronal Cell Death
6) Synapse Rearrangement

Question 2

Neurogenesis

Answer 2

General cells develop into neurons

Neurogenesis ends at birth

Question 3

Cell Migration

Answer 3

Via glial cells, neurons are transported to where they need to be
Cell migration ends at birth

Question 4

Cell Differentiation

Answer 4

Neurons differentiate into specific neurons and glial cells
Myelination occurs
Cell differentiation ends just after birth

Question 5

Synaptogenesis

Answer 5

Synapses develop between cells

Synapses develop AFTER birth

Question 6

Neuronal Cell Death

Answer 6

AKA: Apoptosis
“use it or lose it”
-Neurons compete for chemicals the target cells make, called neurotrophic factors and without enough, they die.
-cells die during adolescence
-Hippocampus, olfactory bulb & glial cells do no undergo apoptosis

Question 7

Synapse Rearrangement

Answer 7

loss or development of synpases, fine tuning

Connections are lost when cell die

Cell have to realign their synapses
Myelination & synapse rearrangement ends by the age of 25

Question 8

Direction the Brain Develops

Answer 8

From Back to Front

From Bottom to Top