Regarding cardiac output?
First Aid / First Aid Past Papers MCQs — Multiple-choice practice
- A. It decreases when lying down
- B. It depends more on heart rate than stroke volume in all conditions
- C. It is the volume of blood pumped by each ventricle per minute
- D. It decreases during sympathetic stimulation
Correct answer
It is the volume of blood pumped by each ventricle per minute
Explanation
Explanation Definition: Cardiac output is the volume of blood pumped by each ventricle of the heart per minute. Formula: Cardiac Output = Heart Rate × Stroke Volume. Physiological role: It determines how much oxygen and nutrients are delivered to body tissues. Effect of activity: Cardiac output increases d uring exercise or sympathetic stimulation. Clinical importance: Reduced cardiac output can lead to shock, dizziness, and organ dysfunction.
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