Free Cardiovascular Physiology MCQs with Answers
43 Cardiovascular Physiology MCQs from Physiology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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43 questions · page 3 of 3
- A. 30 ml
- B. 130 ml
- C. 70 ml
- D. 5 liters
Explanation: Normal stroke volume is approximately 70 mL per ventricle per beat, calculated as end-diastolic volume minus end-systolic volume.
Correct answer: 70 ml- A. The bundle of His
- B. The sinoatrial node
- C. All cardiac muscle
- D. The cervical ganglion
Explanation: The sinoatrial node is the normal pacemaker because it has the highest intrinsic rate of spontaneous depolarisation.
Correct answer: The sinoatrial node- A. Closure of the aortic and pulmonary valves
- B. Opening of the aortic and pulmonary valves
- C. Closure of the mitral and tricuspid valves
- D. Opening of the mitral and tricuspid valves
Explanation: The first heart sound (S1) occurs at the beginning of ventricular systole when the atrioventricular valves, mitral and tricuspid, close.
Correct answer: Closure of the mitral and tricuspid valves