A) 50 beats per minute
B) 75 beats per minute
C) 100 beats per minute
D) 125 beats per minute
Correct Answer: C
Solution :
Cardiac output = Stroke volume\[\times \]Heart rate |
\[\Rightarrow \] Cardiac output \[=5L\]or\[5000\text{ }ml\] |
\[\Rightarrow \] Blood volume in ventricles at the end of diastole\[=100\text{ }ml\] |
\[\Rightarrow \] Blood volume in ventricles at the end of systole \[=50ml\] |
Stroke volume \[=100-50\] \[=50ml.\] |
So, \[5000\text{ }ml=50\text{ }ml\times Heart\text{ }rate\] |
So, Heart rate\[=100\]beats per minute. |
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