Question

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Explanation:

Identify the physiological response

Nina has the flu and a high fever. A fever is a systemic, non-specific inflammatory response triggered by the body to inhibit pathogen replication and accelerate tissue repair. This response is part of the Immune System Lines of Defense.

Determine the line of defense

The first line of defense consists of physical and chemical barriers (like skin and mucous membranes). The second line of defense includes non-specific internal defenses such as phagocytic cells, antimicrobial proteins, and the inflammatory response (including fever). Therefore, a fever is part of the second line of defense.

Classify the type of immunity

Because the second line of defense (including fever) is non-specific and present from birth, it is classified as innate (non-specific) immunity, rather than adaptive (specific) immunity.

Answer:

Select the correct answer from each drop-down menu.

Nina has the flu and a high fever. Her immune system is activating the <blank>second</blank> line of defense. This defense is part of <blank>innate</blank> immunity.