What is the average lifespan of a red blood cell in humans?

3 to 5 days

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120 days

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2 weeks

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1 day

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Solution

The correct option is B
120 days

Each type of blood corpuscle (RBCs, WBCs, platelets) has a different lifespan. The average lifespan of a red blood cell (RBC) is around 120 days. White blood cells (WBCs), except neutrophils, generally live up to 2 weeks. Neutrophils live only for a few hours. Platelets have a lifespan of about 3 to 5 days.

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