Yes. Unique means "the only" in Latin.
umbilical cord
An umbilical vein is one of the blood vessels contained in the umbilical cord. It contributes to fetal circulation.
The fetal circulation is the circulatory system of a human fetus, often encompassing the entire fetoplacental circulation that also includes the umbilical cord and the blood vessels within the placenta that carry fetal blood.The fetal circulation works differently from that of born humans, mainly because the lungs are not in use: the fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord.
Umbilical Arteries Placenta Umbilical Vein Ductus Venosus Foramen Ovale Ductus Arteriosus
Oxygen is carried from the mother to the fetus through the placenta and umbilical vein.
There are two veins that carry oxygen they are the Pulmonary vein and the Umbilical vein:-)
The Ductus arteriosus improves the efficiency of fetal circulation by creating a channal from the mother to the baby. This helps with circulation because oxygen travels from umbilical vein to the fetus which is important because the lungs of the unborm mamal are not functinal so it needs the supply of oxygen from the mother
Umbilical cord is the life line for the fetus. Fetus gets oxygen and nutrition via umbilical cord. The metabolic waste and the carbon bi oxide is taken away back to the mother via umbilical cord. It is very interesting to know about the fetal circulation in detail.
The ductus arteriosus and foramen ovale are important for systemic circulation. This is the type of circulation maintained by fetal pigs but the adult heart requires pulmonary and systemic circulation.
the umbilical artery the umbilical artery
umbilical arteries
allantois