Vascular Biology is the study cellular and molecular functions of Vascular System and its components. It is an inclusive discipline that involves study of vascular function, structure, growth and development. The cardiovascular system consists of the heart, blood, and blood vessels (arteries, veins, and capillaries). This complex system is involved in a diverse number of functions. The vascular network consists of both small and large vessels specifically designed to accommodate varying levels of blood flow and pressure, depending upon the location within the body.