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Fetus at 12 weeks

Fetus (12 weeks old)

Overview

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

Review Date 7/13/2021

Updated by: John D. Jacobson, MD, Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.