A. 100 days
B. 120 days
C. 110 days
D. None of these
🧠 Explanation:
Red blood cells have a lifespan of about 120 days in the human body before being broken down and replaced. This cycle, managed by the spleen and liver, ensures healthy oxygen transport. Their limited lifespan is due to wear from circulation, lacking a nucleus to repair damage. Understanding red blood cell longevity is vital in medical fields like hematology, aiding in diagnosing conditions like anemia. This knowledge supports treatments and blood health monitoring, highlighting the body’s constant renewal process in maintaining vital functions.
