8.5 week fetus

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
8.5 week fetus

Revision

Last reviewed 9/12/2011 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, Bellevue, 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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