Normally, the CRL of the embryo (measured from the skull to the end of the spine) is 2-4 mm in the sixth week of pregnancy. At this stage, the embryo grows at a rate of 1 or 2 mm per week. It is still very small and, even so, it already has a heart and it begins to pump its blood.
Read the full article on: The Sixth Week Pregnancy: Embryo Evolution and Symptoms ( 46).
Zaira Salvador
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV
