Question

Is blood in the arteries oxygenated or de-oxygenated (apart from the pulmonary artery)?

Answer 1

Explanation:

Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation (usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood as well).

There are two types of unique arteries.

• The pulmonary artery carries blood from the heart to the lungs, where it receives oxygen. It is unique because the blood in it is not "oxygenated", as it has not yet passed through the lungs.
• The other unique artery is the umbilical artery, which carries deoxygenated blood from a fetus to its mother.