Vena Umbilicalis, also known as the umbilical vein, is a vein that connects the umbilical cord to the fetus in the womb. There are several synonyms for this term. Some of them include the following: navel vein, neonatal vein, fetal vein, umbilical blood vessel, and umbilical vessel. These terms are used interchangeably to refer to the blood vessel that carries oxygen and nutrients from the placenta to the fetus during pregnancy. Understanding the various synonyms for Vena Umbilicalis can be helpful in medical contexts where this term is used frequently. It is also important for patients to know and understand these terms when discussing fetal development with their healthcare providers.