Question

Life span of mammalian R.B.C. is

• A. 120-128 days
• B. 100 days
• C. Less than 100 days
• D. None of the above

Answer 1

Answer: (A)

120-128 days

In mammals, erythrocytes or red blood cells (RBC) are the most abundant of all the cells in the blood. On an average RBC are about, 5 million to 5.5 millions of RBCs in the blood. These molecules play a significant role in the transport of respiratory gases. RBC's have an average lifespan of 120-128 days after which they are destroyed in the spleen (graveyard of RBC's)

So, the correct answer is '120-128 days'.