Major arteries like the aorta transfer oxygenated blood from the heart to the body tissues.
Coronary arteries are those branches from the major aorta that feed the heart with oxygenated blood.
Arteries are the vessels which carry oxygen-rich blood away from the heart, except for the pulmonary artery, which is the only artery (besides umbilical arteries inside of a fetus) that carries deoxygenated blood. The pulmonary artery carries blood away from the heart into the lungs.
The thing that carries oxygen in your blood is the protein hemoglobin.
Arteries always carry blood away from the heart. Veins always carry blood back to the heart. Not all arteries carry high O2 blood. Not all veins carry low O2 blood. They are named for where they go not what they carry.
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