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Anatomy & Physiology · Chapter 28

Early Development

In the first week, the zygote divides again and again while travelling to the uterus — then burrows into the lining. Step through the journey.

Zygote

Early developmentday 0 → day 7

The stages

📷 Reference image
A real labeled figure to compare with the interactive above.
Early Development reference figure
Early Development — OpenStax, CC BY 3.0 (via Wikimedia Commons)