Topics Covered: Respiratory system and circulatory (cardiovascular) anatomy and physiology. Respiratory pathway (trachea, bronchi, bronchioles, alveoli, etc.), heart structure and function including atria, ventricles, valves, associated blood vessels (aorta, venae cavae, pulmonary arteries, pulmonary veins). Types of blood vessels (arteries, capillaries, veins). Diffusion of gases and gas exchange. Cell respiration.