Lecture 9 Lymphatic System A+P2
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Questions and Answers

What percentage of fluid filtered from the bloodstream is reabsorbed?

  • 95%
  • 85% (correct)
  • 70%
  • 60%
  • What is the main function of lacteals in the small intestine?

  • To transport dietary lipids (correct)
  • To produce lymphocytes
  • To drain excess interstitial fluid
  • To carry out immune responses
  • What is unique about the structure of lymphatic capillaries?

  • They have less permeability than blood capillaries
  • They have smaller diameters than blood capillaries
  • They have a thicker wall than blood capillaries
  • They have a larger diameter and are closed at one end (correct)
  • What is the purpose of lymphatic vessels?

    <p>To return fluid and lipids to the bloodstream</p> Signup and view all the answers

    What are the smaller vessels that unite to form lymphatic vessels?

    <p>Lymphatic capillaries</p> Signup and view all the answers

    Where are lymph nodes located in relation to lymphatic vessels?

    <p>Along the length of lymphatic vessels</p> Signup and view all the answers

    What type of lymphatic tissue is found in the mucous membranes of the GI, urinary, reproductive tracts, and respiratory airways?

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

    What is the primary function of Natural Killer cells?

    <p>To kill infected cells, tumour cells, viruses, or abnormal cells</p> Signup and view all the answers

    What is the result of most inflammatory reactions?

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

    What is the term for the body's ability to defend against specific bacteria, viruses, toxins, and other foreign substances?

    <p>Adaptive immunity</p> Signup and view all the answers

    What type of cells are produced in response to specific antigens and can remember that specific antigen?

    <p>B Lymphocytes</p> Signup and view all the answers

    What is the term for the increased body temperature that results from infection or inflammation?

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

    What is the primary function of the lymphatic system?

    <p>To remove excess filtered fluid from the blood capillaries</p> Signup and view all the answers

    Which lymphatic duct drains into the venous blood at the junction of the Left Internal Jugular and Subclavian Veins?

    <p>Thoracic Duct</p> Signup and view all the answers

    What is the name of the largest single mass of lymphatic tissue in the body?

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

    What is the function of the valves in lymphatic vessels?

    <p>To prevent backflow of lymphatic fluid</p> Signup and view all the answers

    Which lymphatic organ is responsible for maturing B cells and T cells?

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

    What is the name of the process by which the spleen removes abnormal blood cells?

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

    What is the name of the lymphatic vessel that receives lymph from the right jugular, right subclavian, and right bronchomediastinal trunks?

    <p>Right Lymphatic Duct</p> Signup and view all the answers

    What is the function of the lymphatic system in immune responses?

    <p>To initiate an immune response by activating B cells and T cells</p> Signup and view all the answers

    How many lymph nodes are present in the human body?

    <p>600</p> Signup and view all the answers

    What is the location of the spleen in the body?

    <p>Posterior lateral side of the diaphragm</p> Signup and view all the answers

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