Which of these statements about the coronary arteries is true?
A. The left coronary artery supplies the anterior wall of the heart and most of the left ventricle.
B. The right coronary artery supplies most of the right ventricle.
C. Blood flow through the coronary arteries is greatest during ventricular diastole (relaxation).
D. A heart attack occurs if a coronary artery is blocked.
E. All of these are true.
Ans: E. All of these are true.
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