The Pulmonary Veins
(Venæ Pulmonales)
The pulmonary veins return the arterialized blood from the lungs to the left atrium of the heart. They are four in number, two from each lung, and are destitute of valves.
Pulmonary veins
Transport oxygenated blood from lungs to left atrium
Systemic veins ...
The pulmonary veins carry relatively oxygenated blood from the lungs to the heart. The superior and inferior venae cavae carry relatively deoxygenated blood from the upper and lower systemic circulations, respectively.
With the exception of the pulmonary veins, blood in veins is oxygen-poor. The pulmonary veins carry oxygenated blood from lungs back to the heart. Venules are smaller veins that gather blood from capillary beds into veins.
The capillary beds of the lungs are drained by venules that are the tributaries of the pulmonary veins.
Four pulmonary veins, two draining each lung, carry oxygenated blood to the left atrium of the heart ...
 See also: Pulmonary vein, Heart, Lungs, Veins, Human
  
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