What path does blood take as it circulates through the heart?
Rt Atrium-Tricuspid-Rt Ventricle-Pulmonary Valve-Pulmonary Vein- Lungs-Pulmonary Artery-Lft Atrium-Bicuspid-Lft Ventricle-Aortic Valve-Aorta
De-oxygenated blood enters the Right Atrium of the heart from the Vena Cava. The blood is held momentarily in the atrium until the Tricuspid Valve opens allowing the blood to fill the Right Ventricle . The ventricle contracts pushing the blood up through the Pulmonary Mitral Valve and into the Pulmonary Artery. The pulmonary artery carries the de-oxygenated blood to the lungs where the blood exchanges carbon dioxide for oxygen between the Capillaries and the Alveoli. The oxygen rich blood returns to the heart through the Pulmonary Vein .
The pulmonary vein empties into the Left Atrium where the blood is held until it can pass through the Bicuspid Valve and into the Left Ventricle . The left ventricle contracts and pushes the blood up through the Aortic Valve and into the Aorta . The aorta then carries the oxygenated blood to the body through Arteries , Arterioles, Capillaries, Venuoles and Veins back to the Vena Cava.. The vena cava carries blood back to the heart.