alleryStart learning →Cardiac output (CO) is calculated using which formula?
ACO = Heart rate / Stroke volume
BCO = Heart rate x Stroke volume
CCO = Stroke volume - Heart rate
DCO = Heart rate + Stroke volume
Answer & Solution
Correct answer: B. CO = Heart rate x Stroke volume
1. Cardiac output measures the amount of blood pumped by each ventricle in one minute.
2. It is calculated by multiplying stroke volume (SV), the amount of blood pumped per contraction, by heart rate (HR), in contractions per minute.
3. This relationship is written as CO = HR x SV.
4. Dividing, subtracting, or adding heart rate and stroke volume does not match this multiplicative formula.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.4, p. 865_
Keep practising The Cardiovascular System: The Heart
Browse all The Cardiovascular System: The Heart questions for MBBS, or explore more Physiology topics.
Related questions
Work out the numberSpot the lieSpot the odd one outFill in the heart factsA resting adult heart rate below approximately 60 bpm is termed what?Which cranial nerve carries parasympathetic impulses from the cardioinhibitory center to sThe two paired cardiovascular centers that provide nervous control over heart rate are locThe difference between maximum cardiac output during peak exercise and resting cardiac out