Direction of blood flow

- Blood flows along the following course:

1. From the lungs to the left atrium via the pulmonary vein

2. From the left atrium to the left ventricle through the mitral valve

3. From the left ventricle to the aorta through the aortic valve

4. From the aorta to the systemic arteries and the systemic tissues (i.e., cerebral, coronary, renal, splanchnic, skeletal muscle, and skin)

5. From the tissues to the systemic veins and vena cava

6. From the vena cava (mixed venous blood) to the right atrium

7. From the right atrium to the right ventricle through the tricuspid valve

8. From the right ventricle to the pulmonary artery

9. From the pulmonary artery to the lungs for oxygenation II. Hemodynamics

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Anxiety and Depression 101

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