Lymphatic System and Immunity MCQs

By: Prof. Dr. Fazal Rehman Shamil | Last updated: July 27, 2024

  1. What is the primary function of the lymphatic system?
    a) To transport nutrients and gases
    b) To drain excess fluid from tissues and help with immune responses
    c) To deliver oxygenated blood to organs
    d) To regulate body temperatureAnswer: b) To drain excess fluid from tissues and help with immune responses
  2. Which lymphatic organ is responsible for the maturation of T-cells?
    a) Spleen
    b) Thymus
    c) Lymph nodes
    d) TonsilsAnswer: b) Thymus
  3. What is the role of lymph nodes in the immune system?
    a) To produce red blood cells
    b) To filter lymph and trap pathogens
    c) To store nutrients
    d) To produce hormonesAnswer: b) To filter lymph and trap pathogens
  4. Which type of white blood cell is primarily involved in the immune response to viral infections?
    a) Neutrophils
    b) Eosinophils
    c) B cells
    d) T cellsAnswer: d) T cells
  5. Which lymphatic structure is responsible for producing antibodies?
    a) Thymus
    b) Bone marrow
    c) Spleen
    d) Lymph nodesAnswer: b) Bone marrow
  6. What is the function of the spleen in the lymphatic system?
    a) To filter blood and remove old or damaged red blood cells
    b) To produce lymph
    c) To regulate blood pressure
    d) To store glucoseAnswer: a) To filter blood and remove old or damaged red blood cells
  7. Which type of immunity is provided by the production of antibodies by B cells?
    a) Cellular immunity
    b) Humoral immunity
    c) Innate immunity
    d) Passive immunityAnswer: b) Humoral immunity
  8. What is the term for the process by which immune cells identify and destroy pathogens?
    a) Phagocytosis
    b) Apoptosis
    c) Hemostasis
    d) ExocytosisAnswer: a) Phagocytosis
  9. Which lymphatic vessel returns lymph to the bloodstream?
    a) Thoracic duct
    b) Right lymphatic duct
    c) Jugular vein
    d) Subclavian veinAnswer: a) Thoracic duct
  10. Which protein is released by infected cells to help other cells resist viral infections?
    a) Antibody
    b) Interferon
    c) Cytokine
    d) ComplementAnswer: b) Interferon
  11. Which of the following is NOT a component of the lymphatic system?
    a) Lymph
    b) Lymph nodes
    c) Spleen
    d) PancreasAnswer: d) Pancreas
  12. What type of immune response is characterized by the immediate reaction to a pathogen and involves physical barriers and inflammation?
    a) Adaptive immunity
    b) Passive immunity
    c) Innate immunity
    d) Active immunityAnswer: c) Innate immunity
  13. Which type of cell-mediated immunity involves the destruction of infected cells by T cells?
    a) Humoral immunity
    b) Cytotoxic T cell response
    c) Helper T cell response
    d) Regulatory T cell responseAnswer: b) Cytotoxic T cell response
  14. What is the role of memory cells in the immune system?
    a) To provide immediate defense against pathogens
    b) To store information about previously encountered pathogens and enhance future responses
    c) To produce antibodies
    d) To destroy infected cellsAnswer: b) To store information about previously encountered pathogens and enhance future responses
  15. Which immunoglobulin is the most abundant in blood and provides long-term protection against pathogens?
    a) IgA
    b) IgM
    c) IgG
    d) IgEAnswer: c) IgG

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