WBCS.LIVE practice question

What is the approximate average lifespan of a Red Blood Cell (RBC) in humans?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 60 days
  2. 120 days
  3. 180 days
  4. 240 days

Correct answer and explanation

Correct answer: 120 days

Explanation: āœ… Correct Answer: B) 120 days šŸ“š Explanation: Red Blood Cells (erythrocytes) are produced in the bone marrow and circulate in the bloodstream for approximately 120 days. During this time, they transport oxygen to tissues and carry carbon dioxide back to the lungs. Once they become old or damaged, they are primarily filtered out and destroyed by the spleen and the liver.