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.
The cardiovascular system is a component of the circulatory system (the other component being the lymphatic system) and consists of the heart, blood vessels and blood. Its 3 m â¦ ain functions include: 1.he cardiovascular system has three main functions:    Transportation-Of oxygen, nutrients and hormones to cells and  removal of metabolic wastes such as carbon dioxi â¦ de, heat and  nitrogenous wastes.