Why is it incorrect to state that arteries carry oxygenated blood and veins carry deoxygenated blood?

It is incorrect because arteries carry deoxygenated blood and veins carries oxygenated blood.

Explanation:

Veins are blood vessels that carries blood to the heart. Most veins carries deoxygenated blood with the exception of pulmonary veins that carries oxygenated blood from lungs to the left atrium of the heart.

Arteries are blood vessels that carries blood away from the heart. Most arteries carries Oxygenated blood with the exception of Pulmonary arteries that are responsible for carrying deoxygenated blood from the right ventricle to the lungs. When the blood passes through the alveoli, it become oxygenated which is a process of respiration.

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