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NREMT Advanced EMT

Category - Cardiology

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What arteries are the first arteries to arise off the base of the aorta?

Femoral
Brachial
Coronary
Left-side aorta

Explanation

Answer - C - The coronary arteries are the first arteries to arise off the base of the aorta. However, unlike all other arteries, which are perfused during systole, the coronary arteries are perfused during diastole. This is because as the aortic valves open during systole, they cover the coronary arteries. Blood only reaches the arteries when the valve is closed.

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