Lympathic System and Immunity

• What fluid does the lymphatic vessels collect?

  Lymph
• How many lines of defences are there?

  Three
• What is the first line of defence?

  Physical and chemical barriers
• What are the barriers of the first line of defence?

  Eyelashes, cilia, tears, stomach acid, and skin (the largest barrier)
• What is the second line of defence?

  Cell-mediated immunity
• Which three types of WBCs does the second line include?

  Macrophages, neutrophils, and monocytes
• What is the third line of defence?

  Antibody-mediated immunity
• What are antibodies?

  Proteins that recognize foreign substances and act to neutralize or destroy them
• What are antigens?

  Molecules that are found on the surface of the cells and on pathogens
• Which groups can lymphocytes be divided into?

  B and T lymphocytes (cells)
• Which lymphocyte mature in the bone marrow?

  B cells
• Which lymphocyte nature in the thymus gland?

  T cells
• Which T cells recognizes the antigen when it gives off chemical signals that stimulate the action of macrophages, B cells and other T cells?

  Helper T cells
• Which T cell binds with infected cells and destroy them by puncturing a hole in their cell membranes?

  Killer T cells
• Which T cells slow and suppress the process of cellular immunity to entire the normal tissue does not get destroyed?

  Suppressor T cells
• Which T cell remain in the bloodstream are able to act quickly if the antigen is encountered again?

  Memory T cells
• How many types of blood are there?

  4
• What antigen does type A have?

  A
• What antibody type A have?

  Anti-B
• What antigen on red blood cell does type B have?

  B
• What antibody does type B have?

  anti-A
• What antigen does type AB have?

  A and B
• What antibody does type AB have?

  None
• What antigen does type O have?

  none
• What antibody does type O have?

  Anti-A and anti-B
• What group of antigens is found in red blood cells?

  Rh factor