Immune Response I Week 31/ Lecture 1 Quiz
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Questions and Answers

What is the primary function of basophils during an allergic reaction?

  • Phagocytosis of allergens
  • Release of cytokines for wound healing
  • Activation of the adaptive immune response
  • Release of histamine and other inflammatory agents (correct)

How do basophils and mast cells differ in their location within the body?

  • Both basophils and mast cells are found in connective tissues
  • Basophils are found in the blood, while mast cells are found in connective tissues (correct)
  • Basophils are found in connective tissues, while mast cells are found in the blood
  • Both basophils and mast cells are found in the blood

What is the primary role of mast cells in the innate immune response?

  • Release of histamine and other inflammatory agents (correct)
  • Activation of the adaptive immune response
  • Release of cytokines for wound healing
  • Phagocytosis of pathogens

What is the primary difference between the roles of basophils and mast cells in the immune response?

<p>Basophils circulate in the blood, while mast cells are fixed in tissues (B)</p> Signup and view all the answers

Which of the following is a shared function of basophils and mast cells in the immune response?

<p>Release of histamine and other inflammatory agents (B)</p> Signup and view all the answers

What is the relationship between basophils, mast cells, and the release of histamine during an allergic reaction?

<p>Both basophils and mast cells release histamine during allergic reactions (D)</p> Signup and view all the answers

Where and when was immunology first discovered?

<p>Athens, 430 BC (C)</p> Signup and view all the answers

What is the biggest threat to our health in the absence of an immune system?

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

What are antibodies primarily responsible for in our body's defense mechanism?

<p>Fighting pathogens effectively (D)</p> Signup and view all the answers

Which part of the body is NOT mentioned as rich in white cells according to the text?

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

What does the term 'immune' mean according to its Latin origin?

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

Which blood components are responsible for generating all antibodies and immune cells mentioned in the text?

<p>White blood cells (A)</p> Signup and view all the answers

What is the primary function of Major Histocompatibility Complex (MHC) molecules?

<p>To help the immune system recognize foreign substances (A)</p> Signup and view all the answers

Which type of cells primarily express MHC class II molecules?

<p>Antigen-presenting cells (APCs) (C)</p> Signup and view all the answers

What is the significance of the high polymorphism of the MHC genes?

<p>It enhances the body's ability to fight infections (C)</p> Signup and view all the answers

Why is achieving a 100% tissue match between a donor and recipient in kidney transplantation almost impossible?

<p>Due to the high variability of MHC genes (B)</p> Signup and view all the answers

Which statement about MHC molecules is correct?

<p>Every nucleated cell in the body has MHC class I molecules on its membrane (C)</p> Signup and view all the answers

What is the primary function of activated B lymphocytes?

<p>Secrete antibodies and form memory cells (D)</p> Signup and view all the answers

What is the significance of each lymphocyte binding only one particular antigen?

<p>It ensures that the immune system is highly specific (A)</p> Signup and view all the answers

What is the difference between myeloid and lymphoid cells?

<p>Myeloid cells originate in the bone marrow, while lymphoid cells originate in the lymphatic system (B)</p> Signup and view all the answers

Why does the immune system keep only a few cells of each lymphocyte clone on hand?

<p>To allow for rapid clonal expansion upon antigen exposure (B)</p> Signup and view all the answers

What are the two primary lymphoid tissues, and what is their function?

<p>The thymus gland and bone marrow, where cells involved in the immune response form and mature (C)</p> Signup and view all the answers

What is the purpose of lymphoid tissues in the body?

<p>To provide sites where lymphocytes are likely to encounter invaders (C)</p> Signup and view all the answers

Which statement about secondary lymphoid tissues is true?

<p>They are sites where immune cells fight off pathogens and foreign substances. (B)</p> Signup and view all the answers

What is the primary function of the lymph nodes?

<p>To monitor the extracellular compartment and capture pathogens in the lymphatic circulation. (B)</p> Signup and view all the answers

Which of the following is an example of an unencapsulated diffuse lymphoid tissue?

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

What is the primary function of the spleen?

<p>To filter blood and remove pathogens. (B)</p> Signup and view all the answers

What is the significance of Peyer's patches in the small intestine?

<p>They are clusters of immune cells that detect pathogens in the gut. (B)</p> Signup and view all the answers

What is the consequence of having a damaged or destroyed spleen?

<p>The person will be slightly immunosuppressed. (C)</p> Signup and view all the answers

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