Immunology Quiz: Pathogen Defense Mechanisms and Lymphatic System
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Questions and Answers

Which of the following is NOT a common mechanism of counteracting or destroying pathogens by the humoral and cellular immunities?

  • Phagocytosis
  • Neutralization
  • Clonal selection (correct)
  • Opsonization

    • The spleen is located in the ___ of the body.

  • lower abdomen
  • chest cavity
  • upper abdomen (correct)
  • neck region

    • Which of the following is NOT a characteristic that differentiates Peyer's patches from lymph nodes?

  • Peyer's patches lack a germinal center, while lymph nodes have a well-developed germinal center. (correct)
  • Peyer's patches are organized lymphoid follicles found in the small intestine, while lymph nodes are encapsulated lymphoid organs found throughout the body.
  • Peyer's patches lack afferent lymphatic vessels, while lymph nodes have both afferent and efferent lymphatic vessels.
  • Peyer's patches are part of the mucosal immune system, while lymph nodes are part of the systemic immune system.

    • Which of the following is NOT an accurate and general description of the lymphatic system?

    <p>The lymphatic system is a closed system, meaning that lymph fluid flows in a single direction and does not return to the bloodstream.</p> Signup and view all the answers

    What is the primary function of the cisterna chyli?

    <p>To store lymph fluid</p> Signup and view all the answers

    Which specific structure in the body houses macrophages?

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

    What is the main function of the blood-thymus barrier?

    <p>Prevent pathogens from entering the thymus</p> Signup and view all the answers

    Which of the following cell types is NOT typically found in germinal centers?

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

    How does C3b contribute to immune clearance?

    <p>Facilitates phagocytosis of pathogens</p> Signup and view all the answers

    Which inflammatory mediator is responsible for initiating a fever?

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

    Where are mature T and B cells primarily located in the body?

    <p>Lymph nodes</p> Signup and view all the answers

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