which type of blood vessel usually carry oxygen poor blood
Umbilical arteries carry oxygen-poor blood from the fetus and the umbilical vein carries the most oxygen-rich blood to the fetus. Arteries are often described as vessels that carry oxygen-rich blood, and veins are said to carry oxygen âpoor (carbon dioxide-rich) blood. Name two sets of exceptions to this rule that were discussed in this chapter. Pulmonary arteries carry oxygen-poor blood and pulmonary veins carry oxygen-rich blood. Umbilical arteries carry oxygen-poor blood from the fetus and the umbilical vein carries the most oxygen-rich blood to the fetus. Arteries lack valves, but veins have them.