PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following would not increase stroke volume?
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Increase in ventricular stretch while filling with blood
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Increase in ventricular contractility
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Increased afterload
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Increased venous return
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Explanation:
Detailed explanation-1: -Answer and Explanation: The correct answer is (c) Increased end-systolic volume will not increase stroke volume. This describes the amount of blood in the ventricles after a contraction, and a lower value would be indicative of a higher stroke volume.
Detailed explanation-2: -(b) The parasympathetic system regulates the activities like digestion and arousal while the body is at rest. It does not influence the heart rate or cardiac output.
Detailed explanation-3: -Which of the following increases stroke volume? Exercise increases venous return, which would in turn increase the amount of blood in the presystolic ventricle (preload).
There is 1 question to complete.