
How the Immune System Works
12th Grade · Science · 45 min
Lesson Preview
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.


