Which blood vessel supplies oxygenated blood directly to the cardiac muscle?
Correct answer: A. Coronary artery
- A. Coronary artery
- B. Pulmonary artery
- C. Superior vena cava
- D. Coronary sinus
Explanation
The coronary arteries branch from the aorta and deliver oxygenated blood to the myocardium. The coronary sinus returns venous blood from the heart muscle to the right atrium.
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About Cardiovascular System
The cardiovascular system covers the chambers, valves and major vessels of the heart, the cardiac cycle, conduction pathway, blood pressure and the circulation through pulmonary and systemic circuits. It also explains artery, vein and capillary structure, exchange at capillary beds, and how the cardiac cycle differs from general blood flow.
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