A Unique Aspect of Hematopoiesis is That

Question

A unique aspect of hematopoiesis is that
A) white blood cell production always results in the same proportion of leukocytes.
B) white blood cell development varies with the specific needs of the body.
C) neutrophils direct all development from the lymph nodes.
D) lymphocytes never die.

Accepted Answer

Hematopoiesis is the process of blood cell production, and it is notable for its ability to vary white blood cell development based on the specific needs of the body. For instance, during an infection, the body may produce more neutrophils to fight off the pathogen, while during an allergic reaction, it may produce more eosinophils. Therefore, option B is correct. Option A is incorrect because white blood cell production can vary, and the proportion of leukocytes can differ based on the body's needs. Option C is incorrect because neutrophils are just one type of white blood cell, and they do not direct all development. Finally, option D is incorrect because lymphocytes do eventually die, as with all cells in the body.