At 26 to 30 weeks, a fetus is rapidly developing its brain controls and some body functions. The fetus has eyelids which open and close and has a rapidly developing respiratory system.
Reviewed By:
LaQuita Martinez, MD, Department of Obstetrics and Gynecology, Emory Johns Creek Hospital, Alpharetta, GA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.