During the seventh week of pregnancy, most vital organs of the embryo develop: neurons, liver, pancreas, intestines, bronchi (breathing passages), etc. In fact, some of them start working.
By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Óscar Oviedo Moreno M.D. (gynecologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Sandra Fernández B.A., M.A. (fertility counselor).
Last Update: 10/30/2018