Q: The types of white blood cells that arrive at an inflamed site depend on the nature of what?


Read this paragraph and choose the correct option from the provided answers:

capillaries cause swelling of the area, which in turn causes pain. Various kinds of white blood cells are attracted to the area of inflammation. The types of white blood cells that arrive at an inflamed site depend on the nature of the injury or infecting pathogen. For example, a neutrophil is an early arriving white blood cell that engulfs and digests pathogens. Neutrophils are the most abundant white blood cells of the immune system (Figure 17.9). Macrophages follow neutrophils and take over the phagocytosis function and are involved in the resolution of an inflamed site, cleaning up cell debris and pathogens.

 Choices:

- genes

- skin color

- blood type

- injury or infection


A:
injury or infection