About The Heart & Heart Disease

The heart is a muscular pump which lies at the centre of the human cardiovascular system. The main function of the heart is to circulate blood throughout the body. Oxygen-rich blood flows out of the heart through the aorta, which then branches into smaller arteries carrying blood to all parts of the body. Conversely, oxygen-poor blood is transported back to the heart through a network of veins which culminate in two large veins known as the superior and inferior vena cava respectively.