B2 The Circulatory System

THE CIRCULATORY SYSTEM:

• The function of the circulatory system is to transport materials around the body. 
• There is a main vein called the vena cava. 
• There is a main artery called the aorta.
  
• There is deoxygenated blood and oxygenated blood. 
• The circulatory system consists of the blood, heart, and the blood vessels. 
• There are the capillaries in the lungs. 
• The pulmonary vein transports oxygenated blood to the heart through the left atrium. 
• The aorta transports the rest of the blood throughout the body. 
• Arteries carry blood from the heart to body tissues. 
• …