NEET 2019
- Exam
- NEET
- Year
- 2019
- Subject
- Zoology
- Chapter
- Body Fluids and Circulation
NEET 2019 · Zoology · Body Fluids and Circulation
What would be the heart rate of a person if the cardiac output is 5...
What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
Options
- A50 beats per minute
- B75 beats per minute
- C100 beats per minute
- D125 beats per minute
Correct answer
C. 100 beats per minute
Step-by-step solution
CO = HR X (EDV-ESV) (Cardiac Output = Heart rate x stroke volume; stroke volume = End Diastole volume - End Systole volume);
We have, CO = 5 Liters,5000ml
EDV = 100ml
ESV =50 ml
Hence, CO = HR x (EDV - ESV)
HR = CO / (EDV - ESV)
HR = 5000 / (100-50)
= 5000 /50
HR = 100 bpm
We have, CO = 5 Liters,5000ml
EDV = 100ml
ESV =50 ml
Hence, CO = HR x (EDV - ESV)
HR = CO / (EDV - ESV)
HR = 5000 / (100-50)
= 5000 /50
HR = 100 bpm