Multiple choice general knowledge

How many red blood cells does the bone marrow produce every second?

  1. 10 million

  2. 12 million

  3. 5 million

  4. 7 million
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The bone marrow is remarkably productive, manufacturing approximately 10 million red blood cells every second to maintain normal blood counts. This continuous production is essential because red blood cells have a lifespan of only about 120 days. The body must constantly replenish its supply to ensure adequate oxygen transport throughout the body.

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