The Circulatory System
21%

Breathing brings oxygen into the lungs. The Circulatory System, composed of the heart, arteries, capillaries, and veins, transports oxygenated blood from the lungs and heart throughout the body via the arteries.



It takes less than 90 seconds on average for the blood to circulate through all of the body's 100,000 km of blood vessels!
Previous
 
 
 
First Voice Training - The Circulatory System
 
 Next