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Vena Cava has valves, if im not wrong, but pulmonary veins definitely do not have valves.
veins have valves. y
Arteries do not have valves. Veins have valves.The only exceptions are the aortic valve where the aorta leaves the left ventricle of the heart, and the pulmonary valve where the pulmonary artery leaves the right ventricle.
In the large veins. Because in the large veins the blood must fight the gravity, the blood is flowing up, there are valves in them to prevent the blood to fall down again.
Pulmonary veins derive from the lungs. And reside in the cardiovascular system.
Pulmonary veins
The pulmonary veins are the only veins in the body that carry oxygenated blood. Like all veins the blood in the pulmonary veins travel toward the heart.
Pulmonary artery which contains pulmonic valve and aorta which contains aortic valve.
The pulmonary veins are veins which carry oxygenated blood (unlike most veins) back from the lungs to the left atrium of the heart.
Right at the very start of the aorta is the aortic valve and at the very start of the pulmonary artery is the pulmonart valve, each of which are semilunar. In the heart there are two semilunar valves that lad to blood vessels. The pulmonary semilunar valve leads to the pulmonary trunk, and the Aortic semilunar valve leads to the Aorta.
There are 3
Pulmonary veins