Vein
Vein: Vein is a blood vessel carrying deoxygenated blood from the organs to the heart. (Exception: Pulmonary veins carry oxygenated blood from the lungs to the heart)
Vein: Vein is a blood vessel carrying deoxygenated blood from the organs to the heart. (Exception: Pulmonary veins carry oxygenated blood from the lungs to the heart)