Which of the following statements regarding erythrocytes are correct? A. A healthy adult man has, on an average, 5 millions to 5.5 millions of RBCs mm⁻³ of blood. B. RBCs are formed in the red bone marrow in the adults. C. They are devoid of nucleus in most of the mammals and are biconvex in shape. D. They have an average life span of 120 weeks. E. They are destroyed in the spleen, which is known as the graveyard of

Step-by-step solution

Statement A is correct. A healthy adult man has, on an average, 5 millions to 5.5 millions of RBCs per mm³ of blood. Statement B is correct. In adults, RBCs are formed in the red bone marrow. Statement C is incorrect. RBCs are devoid of a nucleus in most mammals, but they are biconcave in shape, not biconvex. Statement D is incorrect. RBCs have an average life span of 120 days, not 120 weeks. Statement E is correct. RBCs are destroyed in the spleen, which is often referred to as the graveyard of RBCs. Therefore, on