Innate Immunity Quiz

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Questions and Answers

Which of the following is another name for innate immunity?

  • Active immunity
  • Passive immunity
  • Acquired immunity
  • Natural immunity (correct)

What makes up the innate immune system?

  • Cells and molecules (correct)
  • T cells and B cells
  • Antibodies and antigens
  • Cytokines and chemokines

What is the primary function of innate immunity?

  • To recognize and respond to specific antigens
  • To initiate tissue repair after damage
  • To prevent microbial invasion and control infections (correct)
  • To destroy all microbes that enter the body

How does the innate immune response differ from the adaptive immune response?

<p>Innate immunity is immediate while adaptive immunity is delayed (C)</p> Signup and view all the answers

What is the role of innate immunity during the delay in adaptive immunity?

<p>To provide essential protection against infections (A)</p> Signup and view all the answers

What is the specificity of innate immunity based on?

<p>The specificity of receptors (A)</p> Signup and view all the answers

What are the two principal types of reactions of the innate immune system?

<p>Inflammation and antiviral defense (B)</p> Signup and view all the answers

What do innate immune receptors recognize?

<p>Pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs) (A)</p> Signup and view all the answers

What is the difference between the reactions of innate immunity and adaptive immunity?

<p>Adaptive immunity has a more limited set of reactions (A)</p> Signup and view all the answers

What is the reason why the innate immune system does not react against healthy cells?

<p>The presence of regulatory molecules (A)</p> Signup and view all the answers

What is the role of innate immunity in tissue repair?

<p>To initiate tissue repair after damage (C)</p> Signup and view all the answers

What is another name for the adaptive immune system?

<p>Acquired immunity (D)</p> Signup and view all the answers

Which of the following is NOT a synonym for innate immunity?

<p>Adaptive immunity (C)</p> Signup and view all the answers

Which immune response is faster, innate or adaptive?

<p>Innate (A)</p> Signup and view all the answers

What is the primary function of innate immunity in the body?

<p>To prevent microbial invasion (D)</p> Signup and view all the answers

What are the two principal types of reactions of the innate immune system?

<p>Inflammation and antiviral defense (D)</p> Signup and view all the answers

What do innate immune receptors recognize?

<p>PAMPs and DAMPs (B)</p> Signup and view all the answers

What is the role of innate immunity in tissue repair?

<p>Initiating repair after tissue damage (B)</p> Signup and view all the answers

How does the specificity of innate immunity differ from that of adaptive immunity?

<p>Innate immunity is less specific than adaptive immunity (A)</p> Signup and view all the answers

Which immune response is better at controlling and eradicating infections, innate or adaptive?

<p>Innate (A)</p> Signup and view all the answers

What is the name of the cells and molecules responsible for innate immunity?

<p>The innate immune system (A)</p> Signup and view all the answers

Which immune response needs to be stimulated by antigen, innate or adaptive?

<p>Adaptive (B)</p> Signup and view all the answers

What is the name of the molecules that prevent the innate immune system from reacting against healthy cells?

<p>Regulatory molecules (B)</p> Signup and view all the answers

How does the number of reactions of the innate immune system compare to that of adaptive immunity?

<p>The innate immune system has a smaller set of reactions than adaptive immunity (C)</p> Signup and view all the answers

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Study Notes

Innate Immunity: The First Line of Defense Against Infections

  • Innate immunity is the first line of defense against infections in multicellular organisms.
  • Innate immunity is also known as natural immunity or native immunity.
  • The cells and molecules responsible for innate immunity make up the innate immune system.
  • Innate immunity blocks microbial invasion through epithelial barriers, destroys many microbes that do enter the body, and is capable of controlling and even eradicating infections.
  • The innate immune response is able to combat microbes immediately upon infection while the adaptive immune response needs to be stimulated by antigen and is delayed.
  • Innate immunity provides essential protection against infections during this delay.
  • Innate immunity is a key participant in the clearance of dead tissues and the initiation of repair after tissue damage.
  • The innate immune system performs its defensive functions with a small set of reactions, which are more limited than the varied and specialized responses of adaptive immunity.
  • The specificity of innate immunity is different from the specificity of lymphocytes, the antigen-recognizing cells of adaptive immunity.
  • The two principal types of reactions of the innate immune system are inflammation and antiviral defense.
  • Innate immune receptors recognize pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs).
  • The innate immune system does not react against healthy cells due to several features, including the specificity of receptors and the presence of regulatory molecules.

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