The Lymphatic And Immune System

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Gives a brief overview of the lymphatic and immune system.

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The Lymphatic And Immune System

  1. 1. THE LYMPHATIC AND IMMUNE SYSTEM<br />Presented by KINGSLEY UBAWIKE<br />BIOLOGY 120<br />PROFESSOR R. ABDULLAH <br />
  2. 2. THE LYMPHATIC SYSTEM<br />Two main functions;<br />1. Maintaining the body’s fluid balance.<br />Fluid that filters into the body interstitially at the systemic capillary beds are returned to the bloodstream via the lymphatic vessels.<br />Lymph plays a huge role in the body’s immunity<br />
  3. 3. THE IMMUNE SYSTEM<br />Functional system the body uses in combating any foreign substance(bacteria, fungi, virus,etc.)<br />Two basic intrinsic defense system;<br />1. Innate (non-specific) defense system.<br />May be localized or systemic.<br />These includes the barrier of the skin, mucus membranes, tears and the leukocytes.<br />2. Adaptive (specific) defense system.<br />This is the second line of defense of the body.<br />Cellular level<br />Acquired immunity; This can be natural or artificial depending on how it is attained.<br />Inherited immunity develops before birth and is a genetic trait.<br />Humoral level<br />Immune response resulting in tissue damage may be triggered by hypersensitivity to an antigen.<br />
  4. 4. LYMPHOID ORGANS<br />Lymph node; Principal lymphoid organ.<br />Spleen; Largest lymphoid organ.<br />Thymus; Prominent in new born, atrophy after puberty.<br />Tonsils & adenoids; Simplest lymphoid organ. <br />
  5. 5. PHAGOCYTOSIS<br />A type of endocytocis in which a segment of plasma membrane is used to engulf any substance.<br />Used by white blood cells to destroy micro- organisms or any foreign matter.<br />White blood cells like macrophages, neutrophils continuously sweep internal organs, cavities for any foreign matter.<br />However; Some bacteria like the Genus Bacillus anthracis, Pneumococcus has a capsular layer that enables them evade phagocytocis.<br />
  6. 6. HOGKINS DISEASE<br />A malignant cancer of the lymph nodes.<br />Occurs in people between the ages of 15-30 years.<br />Signs and symptoms;<br />Paleness and enlargement of lymph nodes<br />Itching, weight loss, fever, anemia, dysphagia<br />Occurs mostly in men<br />One of the most curable cancers<br />Treatment ;<br />Chemotherapy, radiation of the lymph nodes or bone marrow transfer.<br />
  7. 7. LYMPHEDEMA<br />This is swelling of the extremities due to blockage of the lymphatic vessels.<br />Causes;<br />Tumors<br />Removal of lymphatics during cancer surgery<br />Edema and reduced function in the extremity.<br />Treatment;<br />Use of drugs<br />Lymphatic drainage.<br />
  8. 8. REFRENCE<br />Human Anatomy & Physiology by Elaine N. Marieb, Katja Hoehn.<br />Health Careers Today by Judith Gerdin<br />Microbiology an introduction by Tortora, Funke, Case.<br />Medical Terminology; A living language by Bonnie F. Fremgen, Suzanne S. Frucht<br />
  9. 9. THE END<br />

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