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Immune System
| Question | Answer |
|---|---|
| What is innate immunity? | A nonspecific defense system that you are born with; it acts immediately or within hours of infection. |
| What are some examples of innate immune defenses? | Skin, mucous membranes, phagocytic cells, inflammation, fever. |
| What is adaptive immunity? | A specific immune response that develops over time and targets particular pathogens. |
| What are the two major types of adaptive immunity? | Humoral immunity (B cells and antibodies) and cellular immunity (T cells). |
| Which cells are primarily involved in innate immunity? | Phagocytes (e.g., neutrophils, macrophages), natural killer (NK) cells. |
| Which cells are primarily involved in adaptive immunity? | B lymphocytes (B cells) and T lymphocytes (T cells). |
| What is the main characteristic of adaptive immunity? | It has memory — the immune system responds faster and stronger upon subsequent exposures to the same pathogen. |
| What role do antibodies play in adaptive immunity? | They bind to specific antigens on pathogens, neutralizing them or marking them for destruction. |
| How is the speed of response different between innate and adaptive immunity? | Innate immunity responds immediately; adaptive immunity takes longer to develop (days to weeks). |
| What is an antigen? | A molecule that triggers an immune response, often found on pathogens. |
Created by:
Dominique Daigl
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