★ The Cardiovascular System OCR A-level Quiz
Which is the correct definition of stroke volume?
A. the volume of blood returning to the heart via the veins
B. the volume of blood pumped out of the atria each minute
C. the volume of blood pumped out the ventricles in each contraction
D. the volume of blood that fills the ventricles each minute.
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What is the role of chemoreceptors?
A. detect an increase in blood pressure
B. detect an increase in muscle movement
C. detect an increase in carbon dioxide concentration
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