Lymphatic and Immune System Chapter 21.1 Quiz
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Questions and Answers

What is the major function of the lymphatic system?

  • Transport dietary lipids and fat-soluble vitamins to the liver (correct)
  • Absorb excess nutrients from the bloodstream
  • Destroy pathogens in the body
  • Regulate body temperature
  • How does lymph move through the lymphatic vessels?

  • Through phagocytosis
  • By nervous system impulses
  • By skeletal muscle contraction, breathing, and body movements (correct)
  • Active pumping by the lymphatic system
  • Which areas of the body lack lymphatic vessels?

  • Muscles and skin
  • Heart and lungs
  • Liver and kidneys
  • Bone marrow and central nervous system (CNS) (correct)
  • What is a major function of B cells in the immune system?

    <p>Produce plasma cells that bind to antigens</p> Signup and view all the answers

    Where do all leukocytes originate from?

    <p>Red marrow</p> Signup and view all the answers

    What is the role of granular leukocytes in the immune system?

    <p>Help mediate immune response against parasites and pathogens</p> Signup and view all the answers

    What is the primary function of plasma cells?

    <p>To secrete soluble antibodies</p> Signup and view all the answers

    Which of the following statements about T cells is correct?

    <p>T cells can secrete chemokines to bring other immune cells to the area</p> Signup and view all the answers

    Where do B cells develop?

    <p>In the red bone marrow</p> Signup and view all the answers

    What is the primary function of Natural Killer cells?

    <p>To provide the first line of defense against viruses and some cancers</p> Signup and view all the answers

    Which of the following is NOT considered a secondary lymphoid organ?

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

    What is the primary function of lymph nodes?

    <p>To remove debris and pathogens from lymph</p> Signup and view all the answers

    Which of the following is NOT a characteristic of germinal centers?

    <p>Produce red blood cells</p> Signup and view all the answers

    What is the primary function of the spleen?

    <p>To filter blood</p> Signup and view all the answers

    Which of the following is NOT a characteristic of lymphoid nodules?

    <p>Surrounded by a fibrous capsule</p> Signup and view all the answers

    What is the primary function of tonsils?

    <p>To develop immunity to oral pathogens</p> Signup and view all the answers

    Where can mucosa-associated lymphoid tissue (MALT) be found?

    <p>In the gastrointestinal tract, breast tissue, lungs, and eyes</p> Signup and view all the answers

    What is the primary function of bronchus-associated lymphoid tissue (BALT)?

    <p>To provide an effective immune response against inhaled pathogens</p> Signup and view all the answers

    Which of the following is NOT a barrier defense mechanism?

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

    What is the primary function of natural killer cells in the innate immune system?

    <p>Induction of apoptosis in infected cells</p> Signup and view all the answers

    What is the role of pattern recognition receptors in the innate immune system?

    <p>To recognize and respond to pathogen-associated molecular patterns</p> Signup and view all the answers

    Which of the following is NOT a component of the inflammatory response?

    <p>Antibody production</p> Signup and view all the answers

    What is the primary function of the adaptive immune response?

    <p>To recognize and specifically attack a wide variety of pathogens</p> Signup and view all the answers

    What is the role of major histocompatibility complex (MHC) molecules in T cell recognition?

    <p>To present antigens to T cells for recognition</p> Signup and view all the answers

    Which type of MHC molecule is expressed by most human cells?

    <p>Class I MHC</p> Signup and view all the answers

    What is the primary difference between the primary and secondary adaptive immune responses?

    <p>The secondary response is more severe due to the presence of immunological memory</p> Signup and view all the answers

    What is the role of cytokines and chemokines in the immune response?

    <p>To allow communication and attraction of immune cells</p> Signup and view all the answers

    What is the primary function of macrophages in the immune response?

    <p>To stimulate phagocytosis at the site of infection</p> Signup and view all the answers

    Which of the following is the correct order of events in T cell maturation?

    <p>Positive selection, negative selection, apoptosis</p> Signup and view all the answers

    What is the primary function of helper T cells (Th1 and Th2 cells)?

    <p>To secrete cytokines and enhance other immune responses</p> Signup and view all the answers

    Which of the following is NOT a function of antibodies produced by B cells?

    <p>Undergoing clonal expansion and differentiation</p> Signup and view all the answers

    What is the difference between active and passive immunity?

    <p>Active immunity stimulates memory cell production, while passive immunity involves the transfer of antibodies</p> Signup and view all the answers

    What is the process by which antibody levels rise in the blood as pathogen levels decline, and vice versa?

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

    What is the primary function of IgA antibodies in the mucosal immune response?

    <p>To neutralize pathogens and prevent them from binding to receptors</p> Signup and view all the answers

    Which of the following is the primary mechanism by which the body fights viral infections?

    <p>Natural killer cells, interferons, and cytotoxic T cells</p> Signup and view all the answers

    What is the process by which a mature B cell recognizes an antigen and rapidly divides to produce effector and memory B cells?

    <p>Clonal expansion</p> Signup and view all the answers

    What is the primary function of regulatory T cells in the immune system?

    <p>To suppress other T cell immune responses</p> Signup and view all the answers

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