The Immune System
12th Grade · Science · 40 min
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Learning Objective
Define what the immune system does. List the four factors that determine the occurrence of infection. Differentiate between innate and adaptive immunity. Briefly describe the inflammatory reaction. Define antigen and antibody. Describe the activities of T cells. Explain the roll of antigen-presenting cells in adaptive immunity. Differentiate between active and passive immunity. Differentiate between natural and artificial immunity. Define the term vaccine, give three examples of vaccine types. Discuss three types of immune disorders.
- 1
The immune system is divided into two main parts: innate and adaptive immunity.
- 2
Antigens are molecules found on the surface of pathogens that can be detected by our adaptive immune system for recognition, and antibodies are chemicals produced by B-cells that fit on the antigens of pathogens.
- 3
Dendritic cells eat pathogens and carry information about them in the form of antigens to T cells, linking the innate and adaptive immune systems.
