How the Heart Keeps Blood Moving

Blood leaving your foot does not travel straight back to the foot. It returns to the right side of the heart, visits the lungs, enters the left side, and begins another trip through the body. The heart keeps this circuit moving with 4 chambers, 4 valves, and a rhythm generated inside the heart itself. Inside this episode: - Two Pumps Together - Returning From The Body - The Trip To The Lungs - Returning With Oxygen - Arteries To Capillaries Sources include the references linked below. Sources and further reading: - [National Heart, Lung, and Blood Institute, How the Heart Works](https://www.nhlbi.nih.gov/health/heart) - [National Heart, Lung, and Blood Institute, How Blood Flows Through the Heart](https://www.nhlbi.nih.gov/health/heart/blood-flow) - [National Heart, Lung, and Blood Institute, How the Heart Beats](https://www.nhlbi.nih.gov/health/heart/heart-beats) This episode provides general education about how the body works. It is not medical advice, diagnosis, treatment, or a substitute for professional care. Follow Human Body Explained for more clear journeys through how we work.