Multiple choice

The total life cycle of the red blood cell is

  1. 20-45 days

  2. 12-80 days

  3. 80-120 days

  4. 120-140 days

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The average lifespan of a human red blood cell is approximately 120 days, after which they are removed by the spleen and liver.