6 Questions
What are the two principal types of reactions of the innate immune system?
Inflammation and antiviral defense
How does the adaptive immune system respond on successive encounters with a microbe?
Mounts stronger, more rapid, and more effective responses
What are PAMPs?
Microbial molecules that stimulate innate immunity
What is the main difference in the number of antigens recognized between the innate and adaptive immune systems?
Adaptive immune system recognizes almost unlimited antigens
What is a characteristic of PAMPs?
They are shared by microbes of the same type
Which system has more different types of receptors?
Innate Immunity
Study Notes
Innate Immune System
- The two principal types of reactions of the innate immune system are barrier defenses and cellular responses.
- Barrier defenses prevent the entry of pathogens into the body, while cellular responses involve the activation of immune cells to eliminate pathogens.
Adaptive Immune System
- The adaptive immune system responds more efficiently on successive encounters with a microbe by remembering specific pathogens through immunological memory.
- This enables the adaptive immune system to mount a more rapid and effective response to subsequent infections.
PAMPs (Pathogen-Associated Molecular Patterns)
- PAMPs are molecular structures shared by a group of related microbes that are recognized by immune cells as "non-self".
- PAMPs are characteristic of microbial cells, but not found in human cells.
Innate vs. Adaptive Immune Systems
- The main difference in the number of antigens recognized between the innate and adaptive immune systems is that the innate immune system recognizes a limited number of antigens, while the adaptive immune system can recognize millions of different antigens.
Characteristics of PAMPs
- A characteristic of PAMPs is that they are invariant, meaning they do not change, and are shared by a group of related microbes.
Receptors in Innate and Adaptive Immune Systems
- The innate immune system has a limited number of receptors, while the adaptive immune system has a vast array of different receptors that can recognize millions of different antigens.
Test your knowledge of the innate and adaptive immune responses with this quiz. Explore the differences in how each system recognizes and responds to antigens, along with their unique characteristics and functions.
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