onthehealth-reproductive.blogspot.com
Reproductive Health: Prenatal development and sonograph images
http://onthehealth-reproductive.blogspot.com/2009/03/prenatal-development-and-sonograph.html
Prenatal development and sonograph images. Prenatal development is divided into two primary biological stages. The first is the embryonic stage. Which lasts for about two months. At this point, the fetal stage. Embryo at 4 weeks after fertilization. Fetus at 8 weeks after fertilization. Fetus at 18 weeks after fertilization. Fetus at 38 weeks after fertilization. Relative size in 1st month Relative size in 3rd month. Relative size in 5th month. Relative size in 9th month. RETURN TO HOME PAGE.