Stents are metallic cages that hold open a coronary artery after angioplasty. Metallic objects placed in the body can pose problems for MRI scans, which use a strong magnetic field and pulses of radio waves to see inside the body. The magnetic field could dislodge the object, while radio waves could make it heat up.
The Cardiovascular System: The Heart. I. Introduction. A. The major function of the cardiovascular system is to circulate substances throughout. the body. In other words, its organs function to supply cells and tissues with oxygen. and nutrients and also to remove wastes, CO. 2. and urea, from cells and tissues.
Functions of Heart. The heart functions involve the supply of oxygenated blood to all parts of the body. The circulatory system consists of three main types of blood vessels: arteries, veins and capillaries. Arteries carry oxygenated blood and distribute it to different parts of the body.