Use the Following Information to Answer Following Questions

question 8

Multiple Choice

Use the following information to answer Following Questions . A 50-year-old man has a body weight of 110 kg, resting heart rate of 90 beats/min, arterial pressure of 120/70 mm Hg, arterial hematocrit of 35% and a normal body temperature. His pressure-volume diagram of the left ventricle is shown below.
-What event occurs at point D in the pressure-volume relationship?

• A)Atrioventricular valves close
• B)Aortic valve opens
• C)Aortic valve closes
• D)Atrioventricular valves open
• E)Third heart sound

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