LUNGS

Apuntes

LUNGS GAS EXCHANGE PULMONARY ARTERY CAVA VEIN RIGHT ATRIUM RIGHT VENTRICLE PULMONARY VEIN LEFT ATRIUM LEFT VENTRICLE AORTA ARTERY RICH CO2 POOR O2 RICH O2 POOR CO2 WHOLE BODY CELLULAR RESPIRATION ``` THE CIRCULATORY SYSTEM Once nutrients enter the body through the digestive and respiratory systems, they must reach all the cells in the body. Carrying and transporting the waste products of cellular metabolism is also a very important process. The circulatory system is responsible for transporting substances throughout the body. The circulatory system is a vast network of blood vessels. Your heart pumps your blood, which flows through these vessels. Blood flow distributes nutrients to all cells in the body and transports waste products from the cells. ``` ``` THE CIRCULATORY SYSTEM Blood Blood is a liquid made up of two elements: • Blood plasma is a yellowish aqueous solution made up of several solutes. It contains several nutrients (but no oxygen) and waste products. • Blood cells, which may be red blood cells, white blood cells, or platelets. Blood cells are produced in the bone marrow, a tissue found inside many bones. ...