The Lymphatic and Immune System Chapter 21.1 Quiz
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Questions and Answers

What is the primary function of the lymphatic system?

  • To bring excess fluid and filter pathogens from the blood (correct)
  • To remove waste products from the body
  • To transport oxygen and nutrients throughout the body
  • To produce red blood cells

How does lymph move through the lymphatic system?

  • It moves through breathing, muscle contraction, and body movements (correct)
  • It is pumped by the heart
  • It is propelled by the flow of blood in nearby blood vessels
  • It moves through the contraction of specialized lymph vessels

Which of the following is NOT a barrier defense in the immune system?

  • Stomach acid
  • Mucous membranes
  • Skin
  • Lymphocytes (correct)

Which type of leukocytes coordinate the adaptive immune response?

<p>Lymphocytes (A)</p> Signup and view all the answers

What is the primary function of B cells in the immune system?

<p>To produce antibodies that bind to specific antigens (A)</p> Signup and view all the answers

Which of the following areas of the body does NOT have lymph vessels?

<p>Central nervous system (C)</p> Signup and view all the answers

What is the primary function of lymph nodes?

<p>To filter lymph and remove debris and pathogens (D)</p> Signup and view all the answers

Which of the following statements about the spleen is correct?

<p>It is known as the 'filter of the blood' (D)</p> Signup and view all the answers

What are lymphoid nodules?

<p>Dense clusters of lymphocytes without a fibrous capsule, found in respiratory and digestive tracts (C)</p> Signup and view all the answers

What is the role of tonsils in the immune system?

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

What is MALT?

<p>Lymphoid follicles found in the gastrointestinal tract, breast tissue, lungs, and eyes (C)</p> Signup and view all the answers

What is the purpose of germinal centers in lymph nodes and nodules?

<p>To serve as sites for rapidly dividing B cells and plasma cells (B)</p> Signup and view all the answers

What is the main function of macrophages at an infection site?

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

What is the process by which only 2% of T cells successfully mature from thymocytes?

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

What is the main function of helper T cells?

<p>Secreting cytokines to enhance other immune responses (A)</p> Signup and view all the answers

Which class of antibody is the first produced in a primary immune response?

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

What is the purpose of central tolerance in B cell development?

<p>To eliminate self-reactive B cells in the bone marrow (D)</p> Signup and view all the answers

What is the main function of cytotoxic T cells?

<p>Directly killing target cells by inducing apoptosis (D)</p> Signup and view all the answers

What is the purpose of peripheral tolerance in mature B cells?

<p>To eliminate self-reactive B cells that have left the bone marrow (A)</p> Signup and view all the answers

What is the main function of IgA antibodies?

<p>Protecting mucosal surfaces from pathogens (C)</p> Signup and view all the answers

What is the purpose of the secondary immune response?

<p>To produce a stronger and faster response compared to the primary response (D)</p> Signup and view all the answers

What is the main mechanism by which the immune system fights viral infections?

<p>Cytotoxic T cells and NK cells (C)</p> Signup and view all the answers

Which of the following is most responsible for the innate immune response?

<p>Macrophages (A)</p> Signup and view all the answers

What is the function of perforins and granzymes?

<p>Induce apoptosis in infected cells (B)</p> Signup and view all the answers

What is the primary function of the complement system?

<p>Opsonize pathogens and attract phagocytes (A)</p> Signup and view all the answers

Which of the following is NOT a barrier defense?

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

What is the primary function of histamine during inflammation?

<p>Cause vasodilation and increased capillary permeability (A)</p> Signup and view all the answers

Which of the following is responsible for the specificity of the adaptive immune response?

<p>Variable regions on T cell receptors (C)</p> Signup and view all the answers

What is the primary function of antigen presenting cells (APCs)?

<p>Present antigens to T cells (A)</p> Signup and view all the answers

Which of the following is NOT a function of cytokines and chemokines?

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

What is the primary difference between acute and chronic inflammation?

<p>Acute inflammation is short-term, while chronic inflammation is ongoing (B)</p> Signup and view all the answers

Which of the following is NOT a function of the innate immune system?

<p>Provide a highly specific response to pathogens (D)</p> Signup and view all the answers

What is the primary function of B cells?

<p>Secrete antibodies after attaching to an antigen (A)</p> Signup and view all the answers

Where do T cells mature?

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

Which of the following is NOT a secondary lymphoid organ?

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

What is the primary function of Natural Killer cells?

<p>Provide the first line of defense against viruses and some cancers (D)</p> Signup and view all the answers

What happens to the thymus gland as a person ages?

<p>It begins shrinking at birth and may totally be gone at age 120 (C)</p> Signup and view all the answers

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