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Fetal development
Alternate Names : Zygote, Blastocyst, Embryo, Fetus
Pictures & Images
8.5 week fetus
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At 8.5 weeks:
- the embryo now resembles a human
- facial features continue to develop
- beginnings of external genitalia form
- anal passage opens, but the rectal membrane is intact
- circulation through the umbilical cord is well developed
- long bones begin to form
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Review Date : 11/1/2009
Reviewed By : Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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