What is the blood flow through the heart?


Blood flow through the heart: 

The superior vena cava receives deoxygenated blood from the head, neck, and upper extremities.  The inferior vena cava receives deoxygenated blood from the lower limbs and body cavity.  Both the superior and inferior vena cava empty into the Right Atrium.  The deoxygenated blood is then emptied across the tricuspid valves to the Right Ventricle.  In the Right Ventricle, the deoxygenated blood is pumped across the pulmonic valves to enter the left and right pulmonary arteries.  The pulmonary arteries take the deoxygenated blood to the lungs. 


At the lungs, oxygen is exchanged for carbon dioxide.  The oxygenated blood returns to the heart via pulmonary veins.  The right and left pulmonary veins empty into the Left Atrium. In the Left Atrium, oxygenated blood empties over the mitral (or bicuspid) valves.  Then the oxygenated blood enters into the Left Ventricle.  The Left Ventricle pumps the oxygenated blood over the aortic valves into the aorta.  There in the aorta the oxygenated blood is pumped first to the heart via the coronary arteries.  Finally, the oxygenated blood is pumped to the rest of the body via systemic circulation.    


If you would prefer a video, take a look at the link for blood flow through the heart.   








  • Last Updated Sep 25, 2023
  • Views 6
  • Answered By Tamiko Kemp

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