This chapter deals with the system that transports blood to and from cells--the cardiovascular system. It identifies the major organs of the cardiovascular system and explains the function of each organ (objective 1). In this chapter the location, structure, and function of the parts of the heart and the major types of blood vessels are discussed (objectives 2 and 5). It explains the pulmonary, systemic, and coronary circuits of the cardiovascular system and the major vessels in each circuit (objectives 3, 8 and 9). This chapter discusses the cardiac cycle and its control (objective 4). In addition, it describes how blood pressure is created and controlled, and the mechanism that aids in the return of venous blood to the heart (objectives 6 and 7).

Study of the cardiovascular system is essential for understanding how each part of the body is supplied with the materials it needs to sustain life.