La Circulation du Sang dans le Coeur, Animation.

The Cardiac Cycle - Simple! This video and similar videos are available for download, upon license, on our website: https://www.alilamedicalmedia.com/gal... ©Alila Medical Media. All rights reserved. Voice by: Tatiana Bardisbanian Oxygen-poor blood from your body returns to the right atrium of the heart. Blood from the upper body returns through the superior vena cava, while blood from the lower body returns through the inferior vena cava. As the right atrium fills with blood, it contracts, the tricuspid valve opens, and blood is pumped into the right ventricle. When the right ventricle is full, the tricuspid valve closes to prevent blood from flowing back into the atrium. The right ventricle contracts, the pulmonary valve opens, and blood is pumped into the pulmonary artery and into your lungs. The pulmonary valve closes to prevent blood from flowing back into the ventricle. Oxygen-rich blood from the lungs returns through the pulmonary veins to the left atrium of the heart. As the left atrium fills with blood, it contracts, the mitral valve opens, and blood is pumped into the left ventricle. This occurs at the same time as the right atrium pumps blood into the right ventricle on the other side of the heart. As the left ventricle fills, the mitral valve closes, the left ventricle contracts, the aortic valve opens, and oxygen-rich blood is pumped through the aorta to reach all parts of the body. This occurs at the same time as the right ventricle pumps blood into the pulmonary artery on the other side of the heart. The aortic valve quickly closes to prevent blood from flowing back into the heart. In the meantime, the atria have filled with blood, and the cycle repeats. All images/videos by Alila Medical Media have been prepared for informational purposes only and are not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.