Physiology If the hea rate is 70 beats/min, then the cardiac output of this ventricle is closest to A 4.55 L/min B 5.25 L/min C 8.00 L/min D 9.85 L/min 💡 Explanation If the hea rate is 70 beats/min, then the cardiac output of this ventricle is closest to ✓ Correct Answer: B. 5.25 L/min