Arterial systolic pressure occurs ________ while arterial diastolic pressure occurs ________.
A. during the middle of the phase of ventricular ejection; just before the semilunar valve opens
B. during the isovolumetric contraction phase of the cardiac cycle; during the isovolumetric relaxation phase of the cardiac cycle
C. when the ventricle reaches end-systolic volume; when the ventricle reaches end-diastolic volume
D. at the same time as closure of the semilunar valves; at the same time as closure of the atrioventricular valves
E. at the same time as the P-wave of the electrocardiogram; at the same time as the T-wave of the electrocardiogram
Answer: A
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