Which of the following are most numerous in human blood: (A) Neutrophils, (B) Eosinophils, (C) Basophils, (D) Monocytes
Answer is A. Normally, human blood contains 4000 to 11,000 white blood cells per microliter. Of these, the granulocytes (polymorphonuclear leukocytes, PMNs) are the most numerous. Among these neutrophils are the most common ones.