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Two-Cell Human Embryo

36 hours
Buy NowFrom The Biology of Prenatal Development.

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.
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Two-Cell Human Embryo
Two-Cell Human Embryo
Two-Cell Embryo
Two-Cell Embryo
Three-Cell Embryo
Three-Cell Embryo
Four-Cell Human Embryo
Four-Cell Human Embryo
Four-Cell Embryo
Four-Cell Embryo
Five-Cell Embryo
Five-Cell Embryo
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