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The body
Before birth

It will be helpful to have a conceptual framework in place before we go into greater detail about human prenatal development.

1 making things - how do we make things? how does the embryo make itself? how can we 'think' like an embryo? more...

2 periods of development - timing of the pre-implantation period, embryonic period, and fetal period. more...

3 human embryology -an overview of the steps occurring during human prenatal development. more...

(For the development of individual body systems, click here.)

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