How the Immune System Works

How the Immune System Works

12th Grade · Science · 45 min

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Learning Objective

I can analyze how the innate and adaptive immune systems interact to protect the body from pathogens.

  • 1

    The immune system is divided into two main parts: innate and adaptive immunity.

  • 2

    Innate immunity includes physical barriers like skin and mucous linings, as well as chemical barriers such as lysozyme and stomach acid.

  • 3

    Dendritic cells link the innate and adaptive immune systems by presenting antigens to T cells.