1 Electromagnetic coil, formed when a conductor is wound around a core or form to create an inductor or electromagnet.  Ignition coil, an electromagnetic induction coil used in internal combustion engines to create a pulse of high voltage for a spark plug.
systemic circulation the general circulation, carrying oxygenated blood from the left ventricle to the body tissues, and returning venous blood to the right atrium. umbilical circulation fetal circulation through the umbilical vessels. vitelline circulation the circulation through the blood vessels of the yolk sac.
An umbilical granuloma (gran-you-LOW-ma) is a small, red stalk of scar tissue that stays on a newborn baby's bellybutton after the umbilical cord has fallen off. During pregnancy, the umbilical cord carries nutrients and oxygen from a mother to her unborn baby.