At 30 to 32 weeks, a fetus has increased central nervous system control over body functions and rhythmic breathing movements. It is still developing lungs and is partially in control of body temperature.
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.