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| 1. |
Describe the coronary circulation in mammals. |
| Answer» Coronary circulation\xa0is the\xa0circulation\xa0of blood in the blood vessels that supply the heart muscle (myocardium).\xa0Coronary arteries\xa0supply oxygenated blood to the heart muscle, and\xa0cardiac\xa0veins drain away the blood once it has been deoxygenated.\xa0From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart. The\xa0coronary arteries\xa0are the only vessels that branch from the ascending aorta. The brachiocephalic, left common carotid, and left subclavian\xa0arteries\xa0branch from the aortic arch. | |