Pulmonary vein

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 vein
[L. pulmonis, lung]
In birds and mammals, a vein that carries oxygenated blood from the lungs to the left atrium of the heart, from which blood is pumped into the left ventricle and from there to the body tissues.
pulse ...

pulmonary vein The vein that carries oxygenated blood from the lungs to the left atrium of the heart. Veins carrying oxygenated blood from the lungs to the heart. PICTURE ...

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 ...

The capillaries reform to give rise to the pulmonary vein (with oxygenated blood) which leads back to the left atrium. The blood then flows to the thicker walled left ventricle which pumps the blood under pressure to the body.

See also: Heart, Blood, Human, Lungs, Tissue