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.
There are normally two umbilical arteries and one umbilical vein in the umbilical cord. After the umbilical cord is cut off, your health care provider can find these blood vessels. The catheters are placed into the blood vessel, and an x-ray is taken to determine the final position.