The umbilicus, or navel, is a small, hollow area located in the center of the abdomen that is the remnant of the umbilical cord. It is one of the few body parts that can be seen and touched on the outside of the body. The umbilicus is important for fetal development because it is the main source of nutrition and oxygen for the fetus. After birth, the umbilicus no longer serves a vital role and typically heals within a few weeks. The umbilicus can be subject to certain medical conditions such as umbilical hernias, which occur when the intestines or abdominal fat protrude through the umbilicus due to a weak spot in the abdominal wall. Other conditions include umbilical granulomas, which are small, red bumps that form at the base of the umbilicus and can cause irritation and pain. In some cultures, the umbilicus is thought to symbolize the connection between a mother and her child and is believed to have spiritual and emotional significance. The umbilicus is also sometimes referred to as the "third eye" or "center of life" due to its importance in fetal development.