Humoral Immunity Quiz
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Questions and Answers

During the secondary response, which antibody will be in higher concentration?

  • IgA
  • IgE
  • IgM
  • IgG (correct)

What is the duration of the antibody response in the primary response?

  • Long
  • Moderate
  • Indefinite
  • Short (correct)

What is the primary function of antibodies?

  • Transport nutrients
  • Promote cell growth
  • Protect against infectious agents or their products (correct)
  • Regulate body temperature

What are the two main functions of antibodies?

<p>Neutralize toxins and viruses; Opsonize microorganisms (B)</p> Signup and view all the answers

What is the process by which antibodies make microorganisms more easily ingested by phagocytic cells?

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

What is the primary antibody in the fetus due to its ability to cross the placenta?

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

After birth, does the concentration of IgG in the mother increase or decrease?

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

What are the processes involved in the evaluation of humoral immunity?

<p>Measuring amounts of IgG, IgM and IgA (B)</p> Signup and view all the answers

How is the evaluation of humoral immunity tested?

<p>Patient serum (blood) (B)</p> Signup and view all the answers

Which tests are used for the evaluation of humoral immunity?

<p>Nephelometry and Immuno-electrophoresis (C)</p> Signup and view all the answers

What type of antibodies can be made by the fetus if an infection occurs?

<p>Both IgG and IgM (C)</p> Signup and view all the answers

What type of immunity is primarily targeted by humoral immunity?

<p>Antibody-mediated immunity (A)</p> Signup and view all the answers

Which type of immunity is more important for protection against intracellular pathogens?

<p>Cell-mediated immunity (B)</p> Signup and view all the answers

What specific diseases are targeted by humoral immunity due to exotoxin mediation?

<p>Tetanus and diphtheria (D)</p> Signup and view all the answers

Which virulence types are directly targeted by humoral immunity?

<p>Pneumococci, meningococci, haemophilus influenzae (B)</p> Signup and view all the answers

When does the primary immune response occur?

<p>The first time an antigen enters the body (A)</p> Signup and view all the answers

After a primary response, how long is the lag period for the antibodies to become detectable in the serum?

<p>7-10 days (C)</p> Signup and view all the answers

What is the first antibody to be presented when exposed to infection for the first time, followed by which antibody?

<p>IgM; followed by IgG or IgA (D)</p> Signup and view all the answers

Which antibody declines earlier than IgG?

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

For how long does the serum antibody concentration continue to rise before declining?

<p>Several weeks (D)</p> Signup and view all the answers

What is the secondary response?

<p>A second encounter with the same antigen or closely related one months or years after the primary response (C)</p> Signup and view all the answers

In the secondary response, what characterizes the antibody response compared to the primary response?

<p>Rapid antibody response at higher levels than primary response (C)</p> Signup and view all the answers

What is the role of humoral immunity in protection against pathogens?

<p>Mainly against extracellular pathogens (C)</p> Signup and view all the answers

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