The umbilical cord begins to grow around the second month of the fetus’ life. The umbilical cord is a very important life passage for the baby and consists of three blood vessels. The placenta and umbilical cord are fully formed around 12 weeks. Oxygen and nutrients from the pregnant woman reach the baby through the umbilical cord to maintain the baby’s normal growth and development. If there is any abnormality in the umbilical cord, it will easily cause the baby to suffer from oxygen deprivation or even fetal death in the uterus. The umbilical cord is composed of two umbilical arteries and one umbilical vein. The blood in the umbilical arteries contains less nutrients, which are metabolized by the baby’s metabolites that reach the pregnant woman through the umbilical cord. The blood within the umbilical vein is rich in nutrients and oxygen. The umbilical cord appears when the fetus is more than two months old, and the umbilical cord is an important channel connecting the mother and the fetus.