Lymphatic System and Immune Response Quiz
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Questions and Answers

What is the medical term that describes common allergies?

  • Delayed hypersensitivity
  • Anaphylactic shock
  • Hypersensitivity (correct)
  • Immediate hypersensitivity

What type of hypersensitivity is caused by IgE binding to mast cells and causing degranulation?

  • Type 2
  • Type 1 (correct)
  • Type 3
  • Type 4

What is the purpose of epinephrine injectors in the case of anaphylactic shock?

  • To test for allergens
  • To inhibit an anaphylactic response (correct)
  • To destroy the immune system
  • To cause an anaphylactic response

What type of hypersensitivity is the body's response to a blood transfusion of the wrong type?

<p>Type 2 (A)</p> Signup and view all the answers

What does the virus that causes HIV do to helper T cells?

<p>Slowly weakens and inhibits them (B)</p> Signup and view all the answers

What is the defining characteristic of Type 4 hypersensitivity?

<p>Delayed reaction with cytokine release (B)</p> Signup and view all the answers

Where do B cells mature?

<p>Bone marrow (D)</p> Signup and view all the answers

What is the main function of NK cells?

<p>Destroy infected cells (D)</p> Signup and view all the answers

What is the primary function of phagocytes?

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

Which organ is described as being very vascular and 'filtering the blood'?

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

What type of cells are macrophages and neutrophils?

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

What is the process by which NK cells kill infected cells?

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

What is the main function of dendritic cells in the immune response?

<p>Communicate with other immune cells (D)</p> Signup and view all the answers

Where do T cells mature?

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

What is the purpose of opsonization in the immune response?

<p>To mark pathogens for phagocytosis (B)</p> Signup and view all the answers

Which of the following are characteristics of inflammation?

<p>Heat, redness, and swelling (B)</p> Signup and view all the answers

What is the role of histamine during inflammation?

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

What is the function of the complement system in fighting infection?

<p>Tagging pathogens for phagocytosis (A)</p> Signup and view all the answers

What happens during antigen processing in the immune response?

<p>Antigens get cleaved into smaller fragments (C)</p> Signup and view all the answers

What is the outcome of positive selection in thymocytes?

<p>Apoptosis if they don't bind to self antigens (D)</p> Signup and view all the answers

Which cells are responsible for releasing cytokines to draw macrophages to the antigen?

<p>Th1 cells (B)</p> Signup and view all the answers

What is the role of CD8 cells in the immune response?

<p>Destroying infected cells (D)</p> Signup and view all the answers

What is the primary function of the lymphatic system?

<p>To carry excess fluid and remove pathogens from the bloodstream (A)</p> Signup and view all the answers

How does lymph move through the lymphatic system?

<p>Through the pressure generated by the contraction of skeletal muscles and breathing (B)</p> Signup and view all the answers

What is the function of lymph nodes?

<p>To act as staging areas for an immune response (D)</p> Signup and view all the answers

What are lacteals?

<p>Specialized lymphatic vessels that carry dietary lipids and fat-soluble vitamins to the liver and bloodstream (B)</p> Signup and view all the answers

What are the three phases of the immune system?

<p>Barrier, innate, and adaptive (C)</p> Signup and view all the answers

What is the function of the barrier defenses in the immune system?

<p>To keep intruders out of the body (B)</p> Signup and view all the answers

What is the main function of clones in the immune system?

<p>They help destroy antigens by sharing the same antigen receptor. (C)</p> Signup and view all the answers

What is the role of regulatory T cells in the immune system?

<p>They suppress the activity of other T cells to prevent autoimmunity. (D)</p> Signup and view all the answers

What is the process of getting rid of self-reactive B cells called?

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

What is the main function of antibodies?

<p>They neutralize viruses by preventing them from entering host cells. (B)</p> Signup and view all the answers

Which type of antibody is the first to be produced during a primary immune response?

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

What is the main difference between active and passive immunity?

<p>Active immunity involves the body creating its own antibodies, while passive immunity involves the transfer of pre-existing antibodies. (A)</p> Signup and view all the answers

What is the role of helper T cells in the immune response?

<p>They instruct B cells to produce antibodies. (A)</p> Signup and view all the answers

What is the main mechanism by which viruses evade the immune system?

<p>They downregulate MHC class I molecules to avoid detection by cytotoxic T cells. (C)</p> Signup and view all the answers

What is the main treatment for Severe Combined Immunodeficiency (SCID)?

<p>Bone marrow transplant (C)</p> Signup and view all the answers

How do antibodies provide protection against viruses?

<p>They neutralize the virus by coating it and preventing it from entering host cells. (A)</p> Signup and view all the answers

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