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How Well Do You Know Your Nonspecific Innate Immune Defenses? 17.1
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How Well Do You Know Your Nonspecific Innate Immune Defenses? 17.1

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Questions and Answers

Which of the following is NOT a physical barrier of the innate immune system?

  • Antimicrobial peptides (correct)
  • Endothelial cells
  • Skin
  • Mucous membranes
  • What is the function of the resident microbiota in various regions of the body?

  • To provide a physical barrier
  • To compete with potential pathogens (correct)
  • To attack potential pathogens
  • To produce antimicrobial peptides
  • What is the main function of the mucociliary escalator?

  • To flush mucus and trapped microbes out of the body (correct)
  • To provide a physical barrier
  • To produce antimicrobial peptides
  • To attack potential pathogens
  • What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To prevent microbes from entering</p> Signup and view all the answers

    What are the chemical defenses of the innate immune system?

    <p>All of the above</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in the innate immune system?

    <p>To recruit immune cells to the site of infection</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria</p> Signup and view all the answers

    What are the mechanical defenses of the innate immune system?

    <p>All of the above</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells with dead skin cells on the surface</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To recruit immune cells to the site of infection</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides an immediate or very rapid response against potential pathogens, while specific adaptive host defenses provide a slower but more targeted response.</p> Signup and view all the answers

    Which of the following is NOT a physical barrier of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the purpose of the resident microbiota in the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    Which of the following is a mechanical defense mechanism of nonspecific innate immunity?

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

    What is the purpose of tight cell-to-cell junctions in endothelial cells?

    <p>To prevent microbes from entering the body</p> Signup and view all the answers

    Which of the following is a chemical defense mechanism of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the purpose of the mucociliary escalator?

    <p>To flush mucus and trapped microbes out of the body</p> Signup and view all the answers

    Which of the following is a function of cytokines in nonspecific innate immunity?

    <p>To promote inflammation</p> Signup and view all the answers

    What is the purpose of inflammation-eliciting mediators in nonspecific innate immunity?

    <p>To promote inflammation</p> Signup and view all the answers

    Which of the following is NOT a layer of the skin barrier?

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

    What is the purpose of plasma protein mediators in nonspecific innate immunity?

    <p>To prevent the establishment of an infection</p> Signup and view all the answers

    Which of the following is a function of antimicrobial peptides in nonspecific innate immunity?

    <p>To directly attack pathogens</p> Signup and view all the answers

    What is the purpose of peristalsis in nonspecific innate immunity?

    <p>To flush mucus and trapped microbes out of the body</p> Signup and view all the answers

    What is the main function of the skin barrier in the innate immune system?

    <p>To prevent pathogens from entering the body</p> Signup and view all the answers

    Which of the following is NOT a physical barrier of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the function of the mucociliary escalator in the innate immune system?

    <p>To trap and remove pathogens from the respiratory tract</p> Signup and view all the answers

    What is the main function of tight cell-to-cell junctions in endothelial cells?

    <p>To prevent pathogens from entering the body</p> Signup and view all the answers

    What is the function of the resident microbiota in various regions of the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    Which of the following is a chemical defense of the innate immune system?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To promote inflammation in response to infection</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity is present at birth, while specific adaptive host defenses develop over time</p> Signup and view all the answers

    What is the purpose of the resident microbiota in the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    Which of the following is a mechanical defense mechanism of nonspecific innate immunity?

    <p>Mucociliary escalator</p> Signup and view all the answers

    What is the function of mucous membranes in the innate immune system?

    <p>They provide a physical barrier against potential pathogens</p> Signup and view all the answers

    Which of the following is a physical barrier of the innate immune system?

    <p>Tight cell-to-cell junctions in endothelial cells</p> Signup and view all the answers

    What is the main function of the resident microbiota in the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of chemical defenses in the innate immune system?

    <p>To target invading pathogens in a nonspecific manner</p> Signup and view all the answers

    What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To prevent microbes from entering tissues</p> Signup and view all the answers

    What are the mechanical defenses of the innate immune system?

    <p>The expulsion of mucus via the mucociliary escalator</p> Signup and view all the answers

    What is the purpose of the skin barrier in the innate immune system?

    <p>To prevent or remove pathogens from potential sites of infection</p> Signup and view all the answers

    What is the function of antimicrobial peptides in the innate immune system?

    <p>To kill or inhibit the growth of potential pathogens</p> Signup and view all the answers

    What is the role of inflammation-eliciting mediators in the innate immune system?

    <p>To trigger inflammation</p> Signup and view all the answers

    What is the function of the mucociliary escalator in the innate immune system?

    <p>To flush mucus and trapped microbes out of the body</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides an immediate or very rapid response against potential pathogens, while specific adaptive host defenses take longer to develop</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What is the main function of the skin barrier in nonspecific innate immunity?

    <p>To prevent pathogens from entering the body</p> Signup and view all the answers

    What is the function of the mucociliary escalator in nonspecific innate immunity?

    <p>To expel mucus and trapped microbes from the respiratory tract</p> Signup and view all the answers

    What is the function of endothelial cells in nonspecific innate immunity?

    <p>To provide a frontline barrier against invaders</p> Signup and view all the answers

    What is the main function of mechanical defenses in nonspecific innate immunity?

    <p>To prevent or remove pathogens from potential sites of infection</p> Signup and view all the answers

    What is the function of the resident microbiota in nonspecific innate immunity?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What are the chemical defenses of nonspecific innate immunity?

    <p>Chemicals and enzymes in body fluids, antimicrobial peptides, plasma protein mediators, cytokines, and inflammation-eliciting mediators</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides a first line of defense against a wide range of potential pathogens, while specific adaptive host defenses target specific pathogens</p> Signup and view all the answers

    What are the signs and symptoms of infection when nonspecific innate defenses are circumvented by pathogens?

    <p>Fever, inflammation, and redness/swelling at the site of infection</p> Signup and view all the answers

    What is the composition of the skin barrier in nonspecific innate immunity?

    <p>Three layers of closely packed cells with dead skin cells on the surface</p> Signup and view all the answers

    What is the function of cytokines in nonspecific innate immunity?

    <p>To act as plasma protein mediators that coordinate the immune response</p> Signup and view all the answers

    What is the function of plasma protein mediators in nonspecific innate immunity?

    <p>To enhance the immune response</p> Signup and view all the answers

    What is the primary function of nonspecific innate immunity?

    <p>To provide an immediate or very rapid response against potential pathogens</p> Signup and view all the answers

    Which of the following is a physical barrier of nonspecific innate immunity?

    <p>Mucous membranes</p> Signup and view all the answers

    What is the purpose of the resident microbiota in various regions of the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells</p> Signup and view all the answers

    What is the main function of the mucociliary escalator?

    <p>To flush mucus and trapped microbes out of the body</p> Signup and view all the answers

    What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To prevent microbes from entering</p> Signup and view all the answers

    What are the mechanical defenses of nonspecific innate immunity?

    <p>The shedding of skin cells</p> Signup and view all the answers

    What are the chemical defenses of nonspecific innate immunity?

    <p>Chemicals and enzymes in body fluids</p> Signup and view all the answers

    What is the role of plasma protein mediators in nonspecific innate immunity?

    <p>To induce inflammation in response to pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    Which of the following is a chemical defense of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the function of cytokines in nonspecific innate immunity?

    <p>To induce inflammation in response to pathogens</p> Signup and view all the answers

    What is the function of physical barriers in the innate immune system?

    <p>To prevent or remove pathogens from potential sites of infection</p> Signup and view all the answers

    Which of the following is a mechanical defense mechanism of nonspecific innate immunity?

    <p>The shedding of skin cells</p> Signup and view all the answers

    What is the function of mucous membranes in the innate immune system?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What is the function of endothelial cells in the innate immune system?

    <p>To prevent microbes from entering</p> Signup and view all the answers

    What is the function of the resident microbiota in the body?

    <p>To prevent the establishment of an infection</p> Signup and view all the answers

    What are chemical defenses in the innate immune system?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To signal cells to respond to infection or injury</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides a first line of defense, while specific adaptive host defenses provide a second line of defense</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in the innate immune system?

    <p>To elicit an inflammatory response</p> Signup and view all the answers

    What is the main function of mucous membranes in the respiratory and digestive tracts?

    <p>To produce mucus that traps pathogens</p> Signup and view all the answers

    What do tight cell-to-cell junctions in endothelial cells do?

    <p>Prevent microbes from entering the body</p> Signup and view all the answers

    What is the function of the resident microbiota in the body?

    <p>Compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of antimicrobial peptides in the innate immune system?

    <p>Kill pathogens</p> Signup and view all the answers

    What is the purpose of the shedding of skin cells in the innate immune system?

    <p>Remove potential pathogens from the skin's surface</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What is the function of plasma protein mediators in the innate immune system?

    <p>Activate complement and clotting systems</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in the innate immune system?

    <p>Recruit immune cells to the site of infection</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What are the mechanical defenses of the innate immune system?

    <p>Shedding of skin cells, expulsion of mucus, and excretion of feces</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides immediate or very rapid response against potential pathogens, while specific adaptive host defenses target specific pathogens and take longer to develop</p> Signup and view all the answers

    What is the primary function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What is the role of physical defenses in the innate immune system?

    <p>To provide a barrier against potential pathogens</p> Signup and view all the answers

    Which of the following is a mechanical defense mechanism of nonspecific innate immunity?

    <p>Mucociliary escalator</p> Signup and view all the answers

    What is the function of the skin barrier in the innate immune system?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What is the role of resident microbiota in the innate immune system?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of mucous membranes in the innate immune system?

    <p>To provide a nonspecific physical barrier against potential pathogens</p> Signup and view all the answers

    What are the chemical defenses of the innate immune system?

    <p>Antimicrobial peptides, cytokines, and inflammation-eliciting mediators</p> Signup and view all the answers

    What is the role of endothelial cells in the innate immune system?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What happens when the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria</p> Signup and view all the answers

    What is the primary function of nonspecific innate defenses?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What is the main function of antimicrobial peptides in the innate immune system?

    <p>To directly kill or inhibit the growth of potential pathogens</p> Signup and view all the answers

    What is the purpose of inflammation-eliciting mediators in the innate immune system?

    <p>To recruit immune cells to the site of infection</p> Signup and view all the answers

    What is the main function of the skin barrier in the innate immune system?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What is the function of the mucociliary escalator in the innate immune system?

    <p>To remove trapped pathogens from the respiratory tract</p> Signup and view all the answers

    What is the role of endothelial cells in the innate immune system?

    <p>To prevent microbes from entering various tissues</p> Signup and view all the answers

    What is the function of the resident microbiota in the innate immune system?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    Which of the following is NOT a mechanical defense mechanism of nonspecific innate immunity?

    <p>Production of antimicrobial peptides</p> Signup and view all the answers

    What are the chemical defenses of the innate immune system?

    <p>All of the above</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To prevent the establishment of an infection by potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What is the purpose of the tight cell-to-cell junctions in endothelial cells?

    <p>To prevent microbes from entering various tissues</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides an immediate or very rapid response against potential pathogens, while specific adaptive host defenses provide a slower response against specific pathogens</p> Signup and view all the answers

    Which of the following is a physical barrier of nonspecific innate immunity?

    <p>Mucous membranes</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To initiate an inflammatory response</p> Signup and view all the answers

    What is the function of the skin barrier in nonspecific innate immunity?

    <p>To prevent the entry of potential pathogens</p> Signup and view all the answers

    What are the mechanical defenses of nonspecific innate immunity?

    <p>Shedding of skin cells</p> Signup and view all the answers

    What is the function of mucous membranes in nonspecific innate immunity?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What is the role of the resident microbiota in host defenses?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of endothelial cells in nonspecific innate immunity?

    <p>To prevent microbes from entering</p> Signup and view all the answers

    What are the chemical defenses of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the main purpose of nonspecific innate immunity?

    <p>To provide a first line of defense against potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Frequent infections can occur</p> Signup and view all the answers

    What is the function of plasma protein mediators in nonspecific innate immunity?

    <p>To initiate inflammation</p> Signup and view all the answers

    What is the role of the mucociliary escalator in nonspecific innate immunity?

    <p>To expel mucus and trapped microbes out of the body</p> Signup and view all the answers

    What is the function of cytokines in nonspecific innate immunity?

    <p>To initiate inflammation</p> Signup and view all the answers

    What is the function of antimicrobial peptides in nonspecific innate immunity?

    <p>To kill pathogens</p> Signup and view all the answers

    What is the primary function of nonspecific innate immunity?

    <p>To provide a first line of defense against a wide range of potential pathogens</p> Signup and view all the answers

    What is the function of physical defenses in the innate immune system?

    <p>To prevent or remove pathogens from potential sites of infection</p> Signup and view all the answers

    What is the function of mucous membranes in the innate immune system?

    <p>To provide a nonspecific physical barrier against potential pathogens</p> Signup and view all the answers

    What is the function of endothelial cells in the innate immune system?

    <p>To provide a frontline barrier against invaders</p> Signup and view all the answers

    What is the function of mechanical defenses in the innate immune system?

    <p>To prevent or remove pathogens from potential sites of infection</p> Signup and view all the answers

    What is the function of resident microbiota in the innate immune system?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of chemical defenses in the innate immune system?

    <p>To provide a nonspecific chemical barrier against potential pathogens</p> Signup and view all the answers

    What is the main consequence of disrupting the normal microbiota in the body?

    <p>Frequent infections</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells with dead skin cells on the surface</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To act as chemical messengers between cells of the immune system</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides a first line of defense against a wide range of potential pathogens, while specific adaptive host defenses target specific pathogens</p> Signup and view all the answers

    What are the limitations of nonspecific innate immunity?

    <p>It can be circumvented by pathogens on occasion, leading to signs and symptoms of infection</p> Signup and view all the answers

    What is the main function of the skin barrier in nonspecific innate immunity?

    <p>To provide a physical barrier against pathogens</p> Signup and view all the answers

    Which of the following is NOT a mechanical defense mechanism of nonspecific innate immunity?

    <p>Production of antimicrobial peptides</p> Signup and view all the answers

    What is the main function of mucous membranes in nonspecific innate immunity?

    <p>To provide a physical barrier against pathogens</p> Signup and view all the answers

    What is the role of resident microbiota in host defenses?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To provide a physical barrier against pathogens</p> Signup and view all the answers

    What is the purpose of antimicrobial peptides in nonspecific innate immunity?

    <p>To directly kill or inhibit the growth of pathogens</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide a nonspecific response against potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    Which of the following is a chemical defense mechanism of nonspecific innate immunity?

    <p>Production of cytokines</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity is a rapid response against any potential pathogen, while specific adaptive host defenses are slower and target specific pathogens</p> Signup and view all the answers

    Which of the following is NOT a physical barrier of nonspecific innate immunity?

    <p>Production of antimicrobial peptides</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in the innate immune system?

    <p>To initiate an inflammatory response</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells with dead skin cells on the surface</p> Signup and view all the answers

    What is the function of mucous membranes in nonspecific innate immunity?

    <p>To provide a nonspecific physical barrier against potential pathogens</p> Signup and view all the answers

    What is the main function of antimicrobial peptides in nonspecific innate immunity?

    <p>To provide a chemical barrier against potential pathogens</p> Signup and view all the answers

    What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To provide a specific barrier against potential pathogens</p> Signup and view all the answers

    What is the function of the resident microbiota in host defenses?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To target invading pathogens in a nonspecific manner</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Frequent infections</p> Signup and view all the answers

    What are the mechanical defenses of nonspecific innate immunity?

    <p>The shedding of skin cells and the expulsion of mucus</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in nonspecific innate immunity?

    <p>To initiate an inflammatory response</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity targets a wide range of pathogens, while specific adaptive host defenses target a specific pathogen</p> Signup and view all the answers

    What is the purpose of the mucociliary escalator in nonspecific innate immunity?

    <p>To expel mucus and trapped microbes out of the body</p> Signup and view all the answers

    What are the chemical defenses of nonspecific innate immunity?

    <p>All of the above</p> Signup and view all the answers

    What is the composition of the skin barrier?

    <p>Three layers of closely packed cells</p> Signup and view all the answers

    What is the main function of the mucociliary escalator?

    <p>To flush mucus and trapped microbes out of the body</p> Signup and view all the answers

    What is the function of tight cell-to-cell junctions in endothelial cells?

    <p>To provide a physical barrier against potential pathogens</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity?

    <p>To provide an immediate or very rapid response against potential pathogens</p> Signup and view all the answers

    What is the function of inflammation-eliciting mediators in the innate immune system?

    <p>To recruit immune cells to the site of infection and initiate the healing process</p> Signup and view all the answers

    What are the mechanical defenses of the innate immune system?

    <p>The shedding of skin cells</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides a first line of defense against potential pathogens, while specific adaptive host defenses provide a second line of defense.</p> Signup and view all the answers

    Which of the following is a chemical defense of the innate immune system?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    Which of the following is NOT a physical barrier of nonspecific innate immunity?

    <p>Antimicrobial peptides</p> Signup and view all the answers

    What is the purpose of the resident microbiota in the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To signal immune cells to respond to an infection</p> Signup and view all the answers

    What is the main function of the skin barrier in the innate immune system?

    <p>To prevent the establishment of an infection by pathogenic bacteria</p> Signup and view all the answers

    What is the main function of mucous membranes in the innate immune system?

    <p>To prevent the establishment of an infection by pathogenic bacteria</p> Signup and view all the answers

    What is the main function of endothelial cells in the innate immune system?

    <p>To provide a frontline barrier against invaders</p> Signup and view all the answers

    What is the main function of the resident microbiota in the innate immune system?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

    What are the mechanical defenses of the innate immune system?

    <p>Shedding of skin cells and expulsion of mucus via the mucociliary escalator</p> Signup and view all the answers

    What are the chemical defenses of the innate immune system?

    <p>Chemicals and enzymes in body fluids</p> Signup and view all the answers

    What is the main function of nonspecific innate immunity in the immune system?

    <p>To provide an immediate or very rapid response against potential pathogens</p> Signup and view all the answers

    What can happen if the normal microbiota is disrupted in the innate immune system?

    <p>Increased colonization of pathogenic bacteria and frequent infections</p> Signup and view all the answers

    What is the function of cytokines in the innate immune system?

    <p>To regulate the immune response and inflammation</p> Signup and view all the answers

    What is the difference between nonspecific innate immunity and specific adaptive host defenses?

    <p>Nonspecific innate immunity provides a first line of defense, while specific adaptive host defenses provide a second line of defense</p> Signup and view all the answers

    Which of the following is a physical barrier of nonspecific innate immunity?

    <p>Mucous membranes</p> Signup and view all the answers

    What is the purpose of the resident microbiota in the body?

    <p>To compete with potential pathogens for cellular binding sites and nutrients</p> Signup and view all the answers

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