Question

multiple choice question
the ____ delivers oxygen - rich blood to the thick heart wall while the ____ carries the deoxygenated blood away from the heart wall.
o coronary arteries; coronary veins
o pulmonary arteries; pulmonary veins
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Explanation:

Coronary arteries supply oxygen - rich blood to the heart muscle (heart wall). Coronary veins carry deoxygenated blood away from the heart muscle. Pulmonary arteries carry deoxygenated blood from the heart to the lungs and pulmonary veins carry oxygen - rich blood from the lungs to the heart, not related to blood supply of the heart wall.

Answer:

coronary arteries; coronary veins