Which of these statements applies to the cardiac muscle

Question

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The cardiac muscle receives most of its blood supply during ventricular diastole, when the heart is relaxed and the coronary arteries are able to deliver oxygen and nutrients to the heart muscle. Option A is incorrect as cardiac muscle fibers are striated and contain only one or two nuclei. Option B is incorrect as the blood supply to the cardiac muscle occurs during diastole, not systole. Option C is incorrect as the blood returning to the heart from the lung carries oxygen but does not supply blood to the cardiac muscle directly.

Which of These Statements Applies to the Cardiac Muscle