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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 the ventricular systole is 50 mL? [2019]
- a)125 beats per minute
- b)50 beats per minute
- c)75 beats per minute
- d)100 beats per minute
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
What would be the heart rate of a person if the cardiac output is 5 L,...
Stroke volume = End diastolic volume - End systolic volume
= 100 - 50 = 50 mL
Cardiac output = Heart beat x stroke volume
∴ Heart beat = Cardiac output/Stroke volume = 5000 / 50 = 100 beats per minute
= 100 - 50 = 50 mL
Cardiac output = Heart beat x stroke volume
∴ Heart beat = Cardiac output/Stroke volume = 5000 / 50 = 100 beats per minute
Most Upvoted Answer
What would be the heart rate of a person if the cardiac output is 5 L,...
To find the heart rate of a person, we need to calculate the time taken for one complete cardiac cycle. The cardiac cycle consists of systole (contraction phase) and diastole (relaxation phase).
Given:
Cardiac output = 5 L
End-diastolic volume = 100 mL
End-systolic volume = 50 mL
1. Calculate Stroke Volume (SV):
Stroke Volume (SV) is the difference between the end-diastolic volume and end-systolic volume.
SV = End-diastolic volume - End-systolic volume
= 100 mL - 50 mL
= 50 mL
2. Calculate Heart Rate (HR):
Cardiac output (CO) is the product of heart rate (HR) and stroke volume (SV).
CO = HR x SV
5 L = HR x 50 mL
To convert liters to milliliters:
5 L = 5000 mL
5000 mL = HR x 50 mL
HR = 5000 mL / 50 mL
HR = 100 beats per minute
Therefore, the heart rate of the person is 100 beats per minute. Hence, option D is the correct answer.
Given:
Cardiac output = 5 L
End-diastolic volume = 100 mL
End-systolic volume = 50 mL
1. Calculate Stroke Volume (SV):
Stroke Volume (SV) is the difference between the end-diastolic volume and end-systolic volume.
SV = End-diastolic volume - End-systolic volume
= 100 mL - 50 mL
= 50 mL
2. Calculate Heart Rate (HR):
Cardiac output (CO) is the product of heart rate (HR) and stroke volume (SV).
CO = HR x SV
5 L = HR x 50 mL
To convert liters to milliliters:
5 L = 5000 mL
5000 mL = HR x 50 mL
HR = 5000 mL / 50 mL
HR = 100 beats per minute
Therefore, the heart rate of the person is 100 beats per minute. Hence, option D is the correct answer.
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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 the ventricular systole is 50 mL? [2019]a)125 beats per minuteb)50 beats per minutec)75 beats per minuted)100 beats per minuteCorrect answer is option 'D'. Can you explain this answer?
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