👉 Progesterone is a hormone produced by the female reproductive system that plays a crucial role in pregnancy. It is primarily synthesized in the hypothalamus and enters the placenta through the placental lining, where it binds to the progesterone receptor on the surface of the placenta cells. The primary function of progesterone is to regulate the development of the embryo and placenta during pregnancy. In addition to its role in pregnancy, progesterone also plays a role in other reproductive systems such