Medical Physiology, 14th Edition
Chapter 09: Cardiac Muscle; The Heart as a
Pump and Function of the Heart Valves
CHAPTER 09
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Chapter 09: Cardiac Muscle; The Heart as a Pump and Function of the Heart Valves
Hall: Guyton and Hall Textbook of Medical Physiology, 14th Edition
MULTIPLE CHOICE
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.
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1. What is his resting cardiac output in milliliters per minute?
A. 900
B. 8000
C. 9000
D. 10,000
E. 15,000
ANS: C PTS: 1
2. 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
ANS: C PTS: 1
3. What is his ventricular ejection fraction?