2. Early Changes

The amniotic sac, placenta, and umbilical cord are some of the first tissues to form. The placenta is a flat organ that attaches to the uterine wall, where nourishment is passed from mother to baby through the umbilical cord. Inside the umbilical cord, two arteries carry nourishment to the baby and a vein carries waste away. The amniotic sac surrounds the fetus throughout the entire pregnancy. It is filled with amniotic fluid for protection and to help regulate temperature.

Embryo Umbilical Cord luismmolina / Getty Images

More on Facty Health


This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.