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Fetus at 12 weeks

Fetus (12 weeks old)


A fetus at 12 weeks can make a fist and suck its thumb.

Review Date 8/26/2017

Updated by: Peter J Chen, MD, FACOG, Associate Professor of OBGYN at Cooper Medical School at Rowan University, Camden, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.