MediumZoologyBody fluid and circulation
+4 / -1
Cardiac output is defined as:
A
The volume of blood pumped per beat
B
Heart rate × stroke volume
C
Blood pressure × heart rate
D
The volume of blood in the ventricle at end diastole
Explanation
Cardiac output (CO) = Heart Rate (HR) × Stroke Volume (SV). At rest, normal heart rate is ~72 beats/min and stroke volume is ~70 mL/beat, giving a cardiac output of about 5 L/min.
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