Immune System: Innate Immune Responses Chapter 7

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Questions and Answers

What is the main function of the mechanical factor, intact skin?

  • To inhibit microbial growth
  • To produce sebum
  • To produce mucus
  • To regulate body temperature and excrete wastes (correct)

What is the primary purpose of the chemical factor, sebum?

  • To regulate body temperature
  • To prevent water loss from the skin
  • To produce mucus
  • To inhibit microbial growth by breaking down into free fatty acids (correct)

What is an example of a fluid flow mechanical factor?

  • Sweat
  • Tears
  • All of the above (correct)
  • Vomiting

Which of the following is NOT a function of the skin?

<p>Forming blood cells (A)</p> Signup and view all the answers

What is the primary function of the mucous membrane?

<p>To inhibit the entrance of microorganisms (B)</p> Signup and view all the answers

What is the main protein produced by the epidermis?

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

What is the result of vasodilation and increased permeability of blood vessels?

<p>Increased blood flow to the damaged area, causing redness and heat (B)</p> Signup and view all the answers

What is the primary mechanism by which complement proteins destroy microbes?

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

What is the main difference between a chronic and acute inflammatory response?

<p>Duration of the response (A)</p> Signup and view all the answers

What is the term for the increase in body temperature in response to infection?

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

What is the function of the C1q subunit in the classical pathway of the complement system?

<p>Bind to the Fc regions of antibodies (B)</p> Signup and view all the answers

What is a potential complication of fever?

<p>Mild to severe dehydration (C)</p> Signup and view all the answers

What characterizes the primary response to an antigen?

<p>Concentration of antigen in lymphoid tissue and processing by B lymphocytes (C)</p> Signup and view all the answers

What is the role of Helper T Cells in the immune response?

<p>To activate immune cells and have no cytotoxic or phagocytic activity (B)</p> Signup and view all the answers

What is the function of Cytotoxic T Cells?

<p>To kill target cells such as cancer cells and infected cells (D)</p> Signup and view all the answers

What is the main difference between T cells and B cells?

<p>T cells require MHC recognition, while B cells do not (B)</p> Signup and view all the answers

What is the role of memory B cells in the immune response?

<p>To enable a rapid response to previously exposed antigens (B)</p> Signup and view all the answers

What is the main characteristic of cell-mediated immunity (CMI)?

<p>Involves the activation of phagocytes, natural killer cells, and cytokines (C)</p> Signup and view all the answers

What is the primary function of lysozyme in the body?

<p>To break down the cell walls of gram-positive bacteria (C)</p> Signup and view all the answers

What is the role of transferrins in the body's defense against pathogens?

<p>To inhibit bacterial growth by reducing iron levels (C)</p> Signup and view all the answers

What is the primary function of microorganisms that colonize a host without causing disease?

<p>To prevent the overgrowth of pathogens by competing with them for nutrients (C)</p> Signup and view all the answers

Which type of white blood cell is responsible for phagocytosis?

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

What is the name of the process by which a cell ingests a microorganism or other particles?

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

What is the normal range of leukocytes in the blood?

<p>5,000-10,000 per microliter (C)</p> Signup and view all the answers

What is the primary function of Suppressor T Cells?

<p>To inhibit or stop an immune response (D)</p> Signup and view all the answers

What is the term for a condition characterized by a specific immune response against the body's own tissues?

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

What is the result of Immunodeficiency disorders?

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

What is the primary characteristic of Type I Hypersensitivity?

<p>An allergic reaction provoked by re-exposure to a specific allergen (C)</p> Signup and view all the answers

What is the term for the study of the malfunction of the immune system?

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

What is an example of Type II Hypersensitivity?

<p>A blood transfusion reaction due to incompatible blood types (A)</p> Signup and view all the answers

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