The useful idea
- Defends the body
The immune system is a network of biological systems that protects an organism from diseases.
- Recognizes pathogens
It detects and responds to a wide variety of pathogens, such as viruses, bacteria, and parasites, as well as cancer cells and foreign objects,
- Remembers threats
This process creates an immunological memory, resulting in an enhanced response against subsequent encounters with that same pathogen.
Why this matters
Use Immune system to ask clearer questions; personal health decisions still belong with a qualified professional.
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Use Immune system to ask clearer questions; personal health decisions still belong with a qualified professional.
Test your recall
Which idea belongs to the explanation of Immune system?
- Remembers threats
- Recognizes pathogens
- Defends the body — correct
The immune system is a network of biological systems that protects an organism from diseases.
General education only — not medical advice, diagnosis, or treatment.