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.
Let's start with the basics of the umbilical cord. The umbilical cord is the connection between your baby and the placenta. A normal umbilical cord has two arteries and one vein, this is known as a three vessel cord. It is covered by a thick gelatinous substance known as Wharton's Jelly. The vein brings in oxygen and nutrients to the baby from the mother.