Placenta:
* Chorion: The outer layer of the placenta, which attaches to the uterine wall. It's responsible for exchanging nutrients and waste between the mother and fetus.
* Amnion: The inner layer of the placenta, which surrounds the fetus and contains amniotic fluid.
* Decidua: The lining of the uterus that sheds after birth.
* Blood vessels: A network of blood vessels that connect the mother and fetus, allowing for the exchange of nutrients, oxygen, and waste products.
* Villi: Tiny projections that extend from the chorion into the decidua, increasing the surface area for exchange.
Umbilical Cord:
* Wharton's jelly: A gelatinous substance that surrounds and protects the blood vessels.
* Umbilical arteries (2): Carry deoxygenated blood from the fetus to the placenta.
* Umbilical vein (1): Carries oxygenated blood from the placenta to the fetus.
After birth, the placenta and umbilical cord are expelled from the mother's body. The placenta is typically discarded, while the umbilical cord is usually cut, leaving a small stump that eventually falls off.
It's important to note that the afterbirth is a complex structure that plays a crucial role in supporting the fetus throughout pregnancy. If you have any concerns about the afterbirth or any other aspect of pregnancy, please consult your healthcare provider.