Cardiovascular System The histological study of the cardiovascular system Includes two major components Heart- mainly functions as a pump to move blood (and all the things blood carries)through the body Blood vessels -are the tubes that distribute the blood to the cells and then back to the heartCardiovascular System The histological study of the cardiovascular system includes two major components • Heart – mainly functions as a pump to move blood (and all the things blood carries) through the body. • Blood vessels – are the tubes that distribute the blood to the cells and then back to the heart