NEET2019Zoology-Human Physiology
NEET 2019 Zoology Circulatory System MCQ Question
Type: MCQ-numerical-Medium-Class 11
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?
A
100 beats per minute
B
125 beats per minute
C
50 beats per minute
D
75 beats per minute
Correct Answer
Option B
Detailed Explanation
Cardiac output = Stroke volume × Heart rate. Stroke volume = 100 mL - 50 mL = 50 mL. Heart rate = 5000 mL / 50 mL = 100 beats per minute.
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