Numerical: Cardiac Output
If stroke volume is 70 mL and heart rate is 75 beats/min, what is cardiac output? (mL/min)
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About This Question
- Subject
- biology
- Chapter
- human physiology
- Topic
- numerical: cardiac output
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
5250
- Stroke Volume (SV): The volume of blood pumped out by one ventricle with each heartbeat (avg. 70 ml).
- Heart Rate (HR): The number of beats per minute.
- Cardiac Output (CO): The total volume of blood pumped by each ventricle per minute.
- Formula:
- CO=SV×HR
- Calculation:
- CO=70 ml/beat×75 beats/min
- CO=5250 ml/min (approx. 5.25 L/min).
This medium difficulty biology question is from the chapter human physiology, covering the topic of numerical: cardiac output. It appeared in the 2025 exam.
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