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.
Masses of the umbilicus may be related to lesions of the skin, embryologic remnants, or an umbilical hernia. Masses associated with the skin include dermoid cysts, hemangiomas, and inclusion cysts.Umbilical drainage is associated with granulomas and embryologic remnants.he umbilicus is on the right and the bladder on the left. The attachments or the urachal cyst to the bladder and the umbilicus have been clipped (not shown) and divided. Note the convergence of the right and left medial umbilical ligaments as they approach the umbilical ring on the right.