A nurse educator is discussing the immune response with a group of nursing students. Which of the following terms does the nursing instructor use to describe the immune system's first line of defense?
A) Agglutination
B) Cellular immune response
C) Humoral response
D) Phagocytic immune response
Ans: D
Feedback: The phagocytic immune response is the system's first line of defense, involving white blood cells that have the ability to ingest foreign particles. Agglutination refers to the clumping effect occurring when an antibody acts as a cross-link between two antigens. Cellular immune response, the immune system's third line of defense, involves the attack of pathogens by T cells. Humoral response is the immune system's second line of defense, often termed the antibody response.
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