Immune System Components and Functions
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Questions and Answers

What are the cardinal signs of inflammation?

  • Nausea, dizziness, fatigue, fever
  • Loss of appetite, headache, joint pain, chills
  • Redness, heat, swelling, pain (correct)
  • Coughing, sneezing, vomiting, urination
  • Which type of cells predominate in the early stage of inflammation?

  • Neutrophils (correct)
  • Dendritic cells
  • Mast cells
  • Monocytes
  • What is the most important activator of inflammation?

  • Sweat
  • Tears
  • Mast cells (correct)
  • Earwax
  • Which system provides a biochemical barrier against invading pathogens?

    <p>Plasma protein synthesis</p> Signup and view all the answers

    What is the spectrum of bacteria that covers many of the body's surfaces called?

    <p>Normal bacteria flora</p> Signup and view all the answers

    Which cells connect the innate and adaptive immune responses?

    <p>Dendritic cells</p> Signup and view all the answers

    What are the three interactions that are finely regulated to prevent injury to the host tissue and guarantee activation when needed?

    <p>Complement system, coagulation system, and plasma protein synthesis</p> Signup and view all the answers

    What do tissue close to the vessel contain?

    <p>Mast cells</p> Signup and view all the answers

    Which cells predominate as phagocytes in the late inflammatory response?

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

    Which type of antibody is responsible for defending against pathogens on body surfaces?

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

    During the primary response to an antigen, which antibody is produced first?

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

    Which type of immune response is mediated by circulating antibodies?

    <p>Humoral immunity</p> Signup and view all the answers

    What is the function of Interferons in the immune system?

    <p>Protect against viral infections by preventing them from infecting healthy cells</p> Signup and view all the answers

    Which cell type is responsible for cell-mediated immunity?

    <p>T cells</p> Signup and view all the answers

    What is the function of Chemokines in the immune system?

    <p>Attract leukocytes to site of inflammation</p> Signup and view all the answers

    Which stage of stress begins with the actions of adrenal hormones?

    <p>Resistance stage</p> Signup and view all the answers

    What is the period from exposure to the onset of symptoms called in the clinical presentation of infection?

    <p>Incubation period</p> Signup and view all the answers

    Where are foreign antigens presented to T helper cells (CD4) in the immune system?

    <p>MHC2</p> Signup and view all the answers

    What is responsible for most of the protective activity against infections in the immune system?

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

    What is the immune response called when the body recognizes self antigens as foreign?

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

    Which type of hypersensitivity is mediated by IgE against environmental allergens?

    <p>Type 1</p> Signup and view all the answers

    What are the manifestations from H1 receptors during Type 1 hypersensitivity?

    <p>Bronchial constriction, edema, vasodilation</p> Signup and view all the answers

    Which type of hypersensitivity is tissue-specific and mediated by IgG and IgM?

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

    What occurs in Type 3 hypersensitivity when immune (antigen-antibody) complexes are deposited in vessel walls or extravascular areas?

    <p>Tissue deposition leading to problems</p> Signup and view all the answers

    What is a potential consequence of Rh negative giving birth to Rh positive?

    <p>Hyperbilirubinemia in babies due to attack on red blood cells</p> Signup and view all the answers

    What is the result of inappropriate immune responses leading to the breakdown of tolerance?

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

    What happens when IgE binds to crystalline fragment receptors on mast cells during Type 1 hypersensitivity?

    <p>Release of histamine from mast cell degranulation</p> Signup and view all the answers

    What stimulates the faster proliferation of stem cells into progenitor cells in hematopoiesis?

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

    Which hormone is released from the kidneys in response to low renal oxygenation?

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

    Which iron storage protein is majorly responsible for storing iron in the body?

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

    In which type of anemia are RBCs abnormally small and contain reduced amounts of hemoglobin?

    <p>Iron-deficiency anemia</p> Signup and view all the answers

    What is the diagnostic test for thalassemia, a condition characterized by abnormal formation of hemoglobin?

    <p>Hemoglobin electrophoresis</p> Signup and view all the answers

    Which vitamin deficiency can result in macrocytic normochromic anemia and neuro symptoms like paresthesia?

    <p>Vitamin B12</p> Signup and view all the answers

    What causes aplastic anemia, where RBCs are normal in size and hemoglobin content but insufficient in number?

    <p>Hypocellular bone marrow replaced with fat</p> Signup and view all the answers

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