Which body system works MOST closely with the respiratory system to transport oxygen to the cells that require

Question

Which body system works MOST closely with the respiratory system to transport oxygen to the cells that require it?

GPT-5 mini · Answer

The circulatory (cardiovascular) system. It picks up oxygen from the lungs in the blood—carried by red blood cells/hemoglobin—and delivers it via the heart and blood vessels to body cells.

Which body system works MOST closely with the respiratory system to transport oxygen to the cells that require it?

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