Immunology Basics Quiz
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Questions and Answers

Where do components of the immune system originate?

  • Lymph nodes
  • Mucosal-associated lymphoid tissue
  • Spleen
  • Bone marrow (correct)
  • What is the primary function of dendritic cells in the immune response?

  • Generation of the immune response (correct)
  • Antigen recognition
  • Antibody production
  • Activation of T cells
  • Which type of immunity is conferred by elements available constantly to deal with pathogens?

  • Cell-mediated immunity
  • Innate immunity (correct)
  • Humoral immunity
  • Adaptive immunity
  • Where does the spleen collect antigens from?

    <p>Blood</p> Signup and view all the answers

    What is the specific immune response mounted by T and B cells in response to?

    <p>Almost any foreign antigen</p> Signup and view all the answers

    Which of the following is a function of surfactant proteins A & D found in lung fluid?

    <p>Binding to and coating the surfaces of pathogens for phagocytosis by macrophages</p> Signup and view all the answers

    What is the function of pattern recognition receptors in innate immunity?

    <p>Recognize patterns that are common to pathogens</p> Signup and view all the answers

    Which of the following is recognized by toll like receptor 4 (TLR4)?

    <p>Bacterial lipopolysaccharide (LPS)</p> Signup and view all the answers

    What is the role of the macrophage mannose receptor?

    <p>Recognizes pathogen surfaces directly</p> Signup and view all the answers

    What is the function of scavenger receptors in the immune system?

    <p>Recognizing various anionic polymers and low-density lipoproteins on pathogens</p> Signup and view all the answers

    What is the primary function of toll like receptors (TLR) in the immune system?

    <p>Trigger the induced responses of innate immunity</p> Signup and view all the answers

    Which of the following is recognized by mannose-binding lectin receptor?

    <p>A particular orientation of certain sugar residues found on microbes</p> Signup and view all the answers

    What is the consequence of the activation of TLR4 in the immune system?

    <p>Activation of transcription factors and cytokine production</p> Signup and view all the answers

    What is the role of toll like receptors (TLRs) in the immune system?

    <p>Trigger the production of cytokines, chemokines, and co-stimulatory molecules</p> Signup and view all the answers

    What is the primary function of pattern recognition receptors (PRRs) expressed on immune cells?

    <p>Recognize foreign antigens and trigger the innate immune response</p> Signup and view all the answers

    What is the primary function of mucosal epithelia in innate immunity?

    <p>Secrete mucus containing glycoproteins to prevent pathogen adherence</p> Signup and view all the answers

    What is a deficiency seen in conditions like cystic fibrosis related to mucosal epithelia?

    <p>Failure in expelling pathogens</p> Signup and view all the answers

    What is the role of lysozyme and phospholipase A secreted in tears and saliva?

    <p>Inhibit growth of pathogens</p> Signup and view all the answers

    What is the function of pattern recognition receptors in innate immunity?

    <p>Recognize pathogen-associated molecular patterns (PAMPs)</p> Signup and view all the answers

    What is the primary role of epithelial barriers in host defense?

    <p>Prevent the majority of pathogens from entering the body</p> Signup and view all the answers

    What is the consequence of pathogens getting through epithelial barriers?

    <p>Activation of innate immune mechanisms in underlying tissue</p> Signup and view all the answers

    What is the primary function of phagocytosis in innate immunity?

    <p>Engulf and destroy pathogens</p> Signup and view all the answers

    What is the function of mucins secreted by mucosal epithelia?

    <p>Prevent pathogen adherence to epithelium</p> Signup and view all the answers

    What is the primary protective function of epithelial barriers against pathogens?

    <p>Physical, chemical, and competitive protection</p> Signup and view all the answers

    What is the consequence of a deficiency in the process of expelling pathogens in the flow of mucus?

    <p>Increased susceptibility to infections</p> Signup and view all the answers

    What is the primary function of lysozyme and phospholipase A secreted in tears and saliva?

    <p>Inhibit the growth of pathogens</p> Signup and view all the answers

    What is the consequence of a deficiency in the process of expelling pathogens in the flow of mucus?

    <p>Increased adherence of pathogens to epithelium</p> Signup and view all the answers

    What is the primary function of mucosal epithelia in preventing pathogen colonization?

    <p>Secreting mucus to trap pathogens</p> Signup and view all the answers

    What is the primary protective function of epithelial barriers against pathogens?

    <p>Preventing the majority of pathogens from entering the body</p> Signup and view all the answers

    What is the role of pattern recognition receptors (PRRs) in innate immunity?

    <p>Recognizing conserved structures on pathogens</p> Signup and view all the answers

    Which of the following is a function of pattern recognition receptors (PRRs) expressed on immune cells?

    <p>Stimulate ingestion of the pathogen via phagocytosis</p> Signup and view all the answers

    What is the role of the macrophage mannose receptor?

    <p>Recognizes pathogen surfaces directly</p> Signup and view all the answers

    What is recognized by toll like receptor 4 (TLR4)?

    <p>Bacterial lipopolysaccharide (LPS)</p> Signup and view all the answers

    What is the primary function of surfactant proteins A & D found in lung fluid?

    <p>They bind to and coat the surfaces of pathogens for phagocytosis by macrophages</p> Signup and view all the answers

    What is the function of scavenger receptors in the immune system?

    <p>Recognize various anionic polymers and low-density lipoproteins on pathogens</p> Signup and view all the answers

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