The nurse is conducting an education class about myocardial blood supply for patients with coronary artery disease (CAD). The nurse determines that learning has occurred when the patients make which statement(s)
1. "The heart has right and left arteries that arise from the aorta."
2. "The coronary arteries carry blood away from the heart to the right atrium."
3. "Anastomoses are small arteries that supply blood to the heart."
4. "Coronary arteries primarily carry blood to the left ventricle."
5. "The right and left arteries have smaller branches that go around the heart."
Correct Answer: 1,3,5
Rationale: The myocardium receives blood from the right and left coronary arteries that arise from aortic sinuses at the base of the aorta. These divulge into smaller branches that encircle the heart. Numerous smaller vessels, known as anastomoses, serve as communication networks among the coronary arteries. The coronary veins, not arteries, carry blood to the right atrium. The coronary arteries supply blood to all areas of the heart, not primarily the left ventricle.
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