Varicose Veins
2nd answer:
. . . or, blood vessels with less oxygen are veins?
By stale I'm guessing you mean 'without oxygen'. The exception to "stale" veins are the Pulmonary Veins. They are veins because they lead back to the heart, but they come from the lungs filled with oxygen.
Veins carry oxygen depleted blood to the heart.
yes veins are red because they have oxygen in them and when blood is exposed to oxygen it turns red.
The only veins that have oxygen in them are the pulmonary veins. The definition of a vein is a blood vessel that carries blood to the heart. This blood is usually de-oxygenated, but the pulmonary veins are the exception.
The pulmonary veins carries oxygen rich blood from the lungs to the heart.
Veins carry blood low in oxygen back to the heart. However, the amount of oxygen in veins is still higher than the amount of carbon dioxide.
Blood in veins is sent to the heart to get oxygen.
Because both are carrying blood without oxygen.
No, they usually carry low oxygen blood except for the pumonary veins which carry oxygen from the lungs to the heart.
Veins carry the blood back after it delivered the oxygen.
Oxygen.
veins .the right auricle receives the impure blood through veins . This blood is then pumped to the right ventricle and further pumped to the lungs for oxygenation.