How does the double circulatory system enhance the efficiency of oxygen delivery to tissues?

Question

Answer

It allows quick delivery of fully oxygenated blood at high pressure while protecting delicate lung capillaries

Answer

It compensates for low oxygen levels by increasing the heart rate and blood volume

Answer

It uses a single circuit that recirculates oxygenated blood multiple times before distribution

Answer

It balances oxygen and carbon dioxide levels by direct mixing in the heart chambers

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