Answer :

Final answer:

Red blood cells have an average lifespan of 120 days before they are recycled in the liver and spleen.


Explanation:

True, the life span of circulating red blood cells is about 120 days. After this time, the old cells are broken down and recycled by phagocytic macrophages in the liver and spleen.


Learn more about Red blood cell lifespan here:

https://brainly.com/question/37243955


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