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Left Ventricular Volume (ml)
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Hall: Guyton and Hall Textbook of Medical Physiology, 12th Edition
Chapter 09: Cardiac Muscle; The Heart as a Pump and Function of the Heart Valves
Test Bank
Questions 1-3: A fifty-year-old man has a body weight of 110 kg, resting heart rate is 90
beats/minute, arterial pressure is 120/70 mmHg, arterial hematocrit is 35% and body
temperature is normal. His pressure-volume diagram of the left ventricle is shown below.
1. What is his resting cardiac output in
ml/minute?
A. 900
B. 8,000
C. 9,000
D. 10,000
E. 15,000
2. What event occurs at point D in the
man’s pressure-volume relationship?
A. A-V valves close
B. Aortic valve opens
C. Aortic valve closes
D. A-V valves open
E. Third heart sound
3. What is his ventricular ejection fraction?
A. 33%
B. 50%
C. 60%
D. 67%
E. 80%
4. Which of the following will result in spastic contraction of the heart?
A. Excess calcium ions in the blood
B. Excess potassium ions in the blood
C. Excess sodium ions in the blood
D. Decreased sympathetic stimulation
E. Decreased norepinephrine concentration in the blood
Test Bank
9-2
50
100
150
200
50 100 150 200
0
(mmHg)
Left Ventricular Volume (ml)
C
D
Questions 5-7: A sixty-year-old woman has a body weight of 110 kg, resting cardiac output
is 9,000 ml/minute, arterial pressure is 90/50 mmHg, arterial hematocrit is 25% and body
temperature is normal. Her pressure-volume diagram of the left ventricle is shown below.
5. What is her resting heart rate in
beats/minute?
A. 70
B. 80
C. 90
D. 100
E. 110
6. What event occurs at point A in the
woman’s pressure-volume relationship?
A. A-V valves close
B. Aortic valve opens
C. Aortic valve closes
D. A-V valves open
E. Third heart sound
7. If the woman is given a 500 ml whole blood transfusion over a 15 minute period, her
ventricular preload will increase. One minute after the transfusion is complete, what will
the new stroke volume be assuming her heart is normal?
A. 70 ml
B. 80 ml
C. 90 ml
D. 100 ml
E. 120 ml
Questions 8-9: A fifty-year-old man has a body weight of 110 kg, resting heart rate is 90
beats/minute, arterial pressure is 120/70 mmHg, arterial hematocrit is 35% and body
temperature is normal. His pressure-volume diagram of the left ventricle is shown below.
50
100
150
200
50 100 150 200
0
(mmHg)
Left Ventricular Volume (ml)
C
D
8. When does the third heart sound occur in
the ventricular pressure-volume
relationship?
A. At point D
B. Between point A and point B
C. Between point B and point C
D. Between point C and point D
E. Between point D and point A
9. When does the second heart sound occur
in the ventricular pressure-volume
relationship?
A. At point D
B. Between point A and point B
C. Between point B and point C
D. Between point C and point D
E. Between point D and point A