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Flow of blood through the heart
- Oxygenated blood enters the left atrium via the pulmonary vein from the lungs
- The atrio-ventricular valves only allow blood flow from the atrium to the ventricle
- Oxygenated blood is pumped to the body through the aorta
- Oxygenated blood is pumped to the body through the aorta
- The atrio-ventricular valves only allow blood flow from the atrium to the ventricle
- De-oxygenated blood enters the right atrium via the vena cava from the body
- De-oxygenated blood is pumped to the lungs through the pulmonary artery
- De-oxygenated blood is pumped to the lungs through the pulmonary artery
- The semi-lunar valves stop blood flowing back into the ventricles
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