Immune system. Immune system. (Science: immunology) The body system, made up of many organs and cells, that defends the body against infection, disease and foreign substances. The immune system is often stimulated in specific ways to fight cancer cells.
An umbilical cord clamp may be used to hold the cord in place when a cut is made to separate a newborn baby from the placenta.his procedure usually first involves clamping the cord. The umbilical cord clamp thus refers to the devices used to hold the cord in place when the cut is made, and the clamp may stay on for several days while the remaining cord attached to the baby dries.
pertaining to the umbilicus. umbilical cord the structure that connects the fetus and placenta; it is the lifeline of the fetus in the uterus throughout pregnancy. About 2 weeks after conception, the umbilical cord and the placenta are sufficiently developed to begin their functions.he part that is attached to the placenta, still in the uterus, is expelled with the placenta. The stump that remains attached to the baby's abdomen is about 2 inches (5 cm) long. After a few days it falls off naturally. Clamping the umbilical cord.