alleryStart learning →What is the benefit of a double circulation with a four-chambered heart?
ABlood is repressurised after lungs
BBlood needs no oxygen anymore
CBlood flows only in one loop
DBlood mixes more completely
Answer & Solution
Correct answer: A. Blood is repressurised after lungs
Returning blood is pumped again after the lungs, which speeds oxygen delivery to tissues.
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