What does placental umbilical cord mean?

I went to the hospital for a physical examination a few days ago. The doctor told me that I was pregnant. I searched online and said that there was a placenta and umbilical cord. I want to know what the placenta and umbilical cord mean?

The placenta and umbilical cord are important appendages of the fetus during pregnancy. The placenta is composed of amniotic membrane, phyllodes chorion and decidua basilica, and is a place for material exchange between the fetus and the mother. The umbilical cord is the connecting organ between the fetus and the placenta. The umbilical cord connects the abdominal wall of the fetus and the fetal surface of the placenta respectively. The mother will deliver blood, oxygen and nutrients to the fetus through the venous blood of the umbilical cord to promote the growth and development of the fetus. The metabolic waste produced in the body of the fetus during development will be transported to the mother's body through the arterial blood of the umbilical cord, and then excreted by the mother.