Question

Pus indicates that ______.

• A. Body tissues are dying.
• B. The body is trying to overcome an infection.
• C. Too much lymph has built up.
• D. The inflammatory response has failed to defend against a microbial invasion.

Answer 1

The correct option is B

The body is trying to overcome an infection.

During infection,macrophages release cytokines which trigger neutrophils to seek the site of infection by chemotaxis. Once reached, the neutrophils release granules which destroy pathogens or microbes. The pathogens try to resist the immune response by releasing toxins called leukocidins. As the neutrophils die off from toxins and old age, they are destroyed by macrophages, forming the viscous pus. Therefore, B is the answer where the body is trying to overcome an infection.