Cardiovascular System The Cardiovascular System consists of three interrelated components and they are: Blood, The Heart and the Blood Vessels Blood Blood is a liquid connective tissue composed of a liquid matrix called plasma and cells. Blood transports various substances, helps regulates several life processes, and affords protection against disease. Blood Plasma is the Liquid part of the matrix constituting the remaining 55% of the Blood. BLOOD VESSELS The blood vessels are the channels through which blood is distributed to the body tissues. The vessels Makes up two closed systems –pulmonary vessels (transports blood from the right ventricle to the lungsa and back to the left atrium) and systemic vessels (carries blood from the left ventricle to the tissues in all parts of the body...