Image Gallery
Two-Cell Human Embryo
![Two-Cell Human Embryo [Click for next image]](/images/prenatal_numbered_655/two-cell-human-embryo.jpg "Click for next image")
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Note:Each cell in the early embryo is called a blastomere.Label Key:1. perivitelline space 2. outline of blastomere #1 3. zona pellucida 4. cell membrane of blastomere #2 | ||
| All ages referenced to fertilization, not last menstrual period. |
Human Zygote
The Zygote
Two-Cell Human Embryo
Two-Cell Embryo
Three-Cell Embryo
Four-Cell Human Embryo
