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What is the lifespan of White Blood Cells (WBCs) in the body?

What is the lifespan of White Blood Cells (WBCs) in the body?

  • (A) 11 to 14 days
  • (B) 12 to 15 days
  • (C) 13 to 20 days
  • (D) 17 to 25 days
  • White blood cells, or leukocytes, are integral to the immune system. The lifespan of WBCs is not the same for each cell type, nor is it the same if they are actively fighting an infection. The average lifespan of WBCs circulating in the blood is 13 to 20 days. The lifespan of different WBCs varies:
  • Granulocytes, especially neutrophils: These WBCs remain in the blood for a few hours to a few days.
  • Monocytes: These WBCs remain in the blood for a few days before they settle in the tissues to become macrophages, where they remain for months.
  • Lymphocytes: These WBCs are vital for the immune memory. They remain for years.
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Related MCQs:

 ‘NATO’ is an abbreviation of:

March 18, 2026 No Comments
  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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