Final answer:
Neutrophils are the most numerous white blood cells (WBCs) in a healthy individual, comprising 50-70 percent of the total leukocyte count. They are called neutrophils because their granules show up most clearly with neutral stains, and they are primarily involved in defending against bacterial infections. Option a. True is correct.
Step-by-step explanation:
The most numerous white blood cells (WBCs) in a healthy individual are the neutrophils. This statement is true.
Neutrophils are a type of leukocyte (WBC) and they typically make up 50-70 percent of the total leukocyte count. They are called neutrophils because their granules show up most clearly with stains that are chemically neutral. Neutrophils are primarily involved in the body's defense against bacterial infections.
For example, when there is an infection, neutrophils migrate to the site of infection and release granules and enzymes to kill and digest the invading pathogens.