Skip Navigation

Prenatal Image Gallery Index


7 1/2 week embryo

0 - 2 weeks

The Calm Before the Storm Fertilization Begins Oocyte Spermatozoon Ovulation Fertilization Female reproductive system DNA Structure A Human Cell Sperm Secondary Oocyte Single-Cell Embryo Zygote Human Zygote The Zygote Two-Cell Human Embryo Two-Cell Embryo Three-Cell Embryo Four-Cell Human Embryo Four-Cell Embryo Five-Cell Embryo Six-Cell Embryo Seven-Cell Embryo Eight-Cell Embryo Nine-Cell Embryo Ten-Cell Embryo Morula: Twelve-Cell Embryo The Human Morula Early Blastocyst Blastocyst Blastocyst with Inner Cell Mass Hatching Blastocyst Hatching Blastocyst Hatched Blastocyst Hatched Blastocyst Hatched Blastocyst Free Blastocyst  (without zona) Chromosomes Chromosomes and the Nucleus Early Implantation Early Implantation Embryo Cross Section 8-9 Days Embryo at About 11 Days Implantation Well Underway Early Placenta Formation Implantation Complete Germ Layers of the Embryo

2 - 4 weeks

Sponsored Links

4 - 6 weeks

6 - 8 weeks

Sponsored Links

8 - 10 weeks

10 - 12 weeks

Sponsored Links

3 - 6 months

6 - 9 months