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Coronary circulation is the circulation of blood in the blood vessels of the heart muscle. The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins. Most tissue perfusion in the heart occurs when the coronary arteries open during diastole.
The cardiovascular system performs numerous functions. The heart pumps blood throughout the entire body. Part of the cardiovascular system's function includes pumping blood to the lungs for oxygenation. Another part of the system includes the arterioles and capillaries distributing blood to the rest of the body.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.