Pulmonary Artery vs. Pulmonary Vein: Key Differences Explained
Pulmonary Artery vs Vein
Pulmonary Artery
- Carries deoxygenated blood from the right ventricle of the heart to the lungs.
- Has lower pressure than the aorta, which carries oxygenated blood from the left ventricle of the heart to the body.
- Contains less elastic tissue than the aorta.
- Has a larger diameter than the pulmonary vein, which carries oxygenated blood from the lungs back to the heart.
- Is located in the chest cavity.
Pulmonary Vein
- Carries oxygenated blood from the lungs to the left atrium of the heart.
- Has lower pressure than the pulmonary artery.
- Contains more elastic tissue than the pulmonary artery.
- Has a smaller diameter than the pulmonary artery.
- Is located in the chest cavity.
Summary Table
| Feature | Pulmonary Artery | Pulmonary Vein |
|---|---|---|
| Blood flow direction | Right ventricle to lungs | Lungs to left atrium |
| Pressure | Lower than aorta | Lower than pulmonary artery |
| Elastic tissue content | Less than aorta | More than pulmonary artery |
| Diameter | Larger than pulmonary vein | Smaller than pulmonary artery |
| Location | Chest cavity | Chest cavity |
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