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13 questions from this quiz
A muscular organ
It pumps blood further around the body
Deoxygenated blood from the body
Vena cava
Deoxygenated blood
Aorta
The heart muscle with oxygenated blood
Stop blood flowing backwards
Ventricles contract
About 70 times
Blood goes through heart twice per trip
Stroke volume ×\times× heart rate
The lungs
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