Manor Preboards Module 2 Practice Test

A vaccine primarily stimulates which arm of the immune system?

Innate immune system Adaptive immune system (B and T cell responses) Humoral immune system Cellular immune system

Correct Answer:

Adaptive immune system (B and T cell responses)

Explanation:

Vaccines work by training the body's adaptive immune system to recognize and remember specific pathogens. This system relies on B cells and T cells to mount targeted, lasting responses. B cells produce antibodies (humoral response) and can form memory cells, while T cells handle other targeted roles (cellular response) and also contribute to memory. Innate immunity responds quickly but non-specifically and doesn’t provide long-term protection. Because vaccines are designed to create a specific, lasting defense by generating memory, the arm being stimulated is the adaptive immune system—driven by both B and T cell responses.

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