Ch 8: Part II

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  1. thymus
    • primary organ of the lymphatic system
    • produces T lymphocytes
  2. spleen
    • filters out aging blood cells & debris through phagocytosis
    • lymphocytes initiate here
  3. lymph
    fluid from organs/tissues that is circulated through the lymph vessels
  4. lymph capillaries
    microscopic vessels that draw lymph from the tissues to lymph vessels
  5. lymph vessels
    vessels that receive lymph from lymph capillaries and circulate it to the lymph node
  6. lacteals
    specialized lymph vessels in the small intestines that absorb FAT into the bloodstream
  7. chyle
    white/pale substance of lymph that contains FATTY substances absorbed by the lacteals
  8. lymph nodes
    • small oval structures that filter lymph
    • many in: cervical, axillary and inguinal regions of the body
  9. lymph ducts
    collecting channels that carry lymph from the lymph nodes back into our blood stream-to veins
  10. right lymphatic duct
    receives lymph from upper right part of the body
  11. thoracic duct
    receives lymph from left side of head, neck, chest, abdomen, left arm and lower extremeties.
  12. antigen
    pathogen-when introduced into the body, antibodies will form against it
  13. antibody
    destroys or inactivates an antigen
  14. immunoglobulins (Ig)
    • Antibodies secreted by B lymphocytes
    • 5 classes: IgG, IgA, IgE, IgM, IgD
  15. active immunity
    immunity that protects us against future infections-these develop naturally after we contract an infection (pathogen) or artificually from a vaccine
  16. passive immunity
    immunity resulting from antibodies conveyed naturally from our mothers (in the placenta) or artificially by injection of a serum containing antibodies.
  17. erythropenia
    abnormal reduction of red blood cells
  18. lymphocytopenia
    abnormal reduction of lymphocytes
  19. netropenia
    abnormal reduction of neutrophils
  20. pancytopenia
    abnormal reduction in all cellular components in the blood
  21. hemolysis
    breakdown of red blood cell membrane
  22. immunocompromised
    impaired immunological defenses due to a disorder or therapy with suppresive agents.
  23. immunosuppression
    imparied ability to provide an immune response
  24. lymphadenopathy
    presense of enlarged (diseased) lymph nodes
  25. spenomegaly
    enlargement of the spleen
  26. AIDS - Aquired immunodeficiency syndrome
    caused by HIV, immune cells are ineffective- therefore, you become suseptable to infection, malignance, neurological diseases, STDs, etc.
  27. anemia
    reduction in red blood cells- not enogh O2 to tissures
  28. aplastic anemia
    • normocytic-normochromic
    • failure of bone marrow to produce red blood cells
  29. iron deficiency anemia
    • microcytic-hypochromic
    • lack of iron; small red blood cells containing low amonts of hemoglobin
  30. pernicious anemia
    • macrocytic-normochromic
    • inadequite supply of B12; causing RBCs to become large, varied in shape, and reduced in number.
  31. autoimmune disease
    • when the body produces antibodies against itself
    • resulting in-tissue distruction, loss of function, etc.
  32. erythroblastosis fetalis
    incompatability of a fetus and mother, Rh + and -, mothers blood attacks babies, baby needs blood transfusion to survive.
  33. hemochromatosis
    hereditary disorder-excessive buildup of iron deposits in the body
  34. hemophilia
    hereditary bleeding disorders in which clotting factors are abscent and blood does not coagulate.
  35. leukemia
    • chronic/acute malignant disease of blood-forming organs
    • abnormal leukocytes in blood/bone marrow
    • classified according to type of white blood cell
  36. myelodysplasia
    • disorder of the bone marrow-proliferation of abnormal stem cells
    • usually develops into a more specific type of leukemia
  37. lymphoma
    • neoplastic disorder of lymph tissue
    • malignant, Hodgkin disease
  38. metastasis
    process of spreading cancer cells by way of blood and lymph circulation
  39. mononucleosis
    • caused by Epstein-Barr cirus
    • increse in mononuclear cells (monocytes/lymphocytes) in the blood, enlarged lymph nodes, fatigue and sore throat
  40. polycythemia
    increase in the number of erythrocytes and hemoglobin in the blood
  41. septicemia
    systemic disease caused by infection of microorganisms and their toxins in the circulating blood
  42. thrombocytopenia
    bleeding disorder-abnormal decrease in the number of platelets-impairs clotting process
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Ch 8: Part II
2012-07-05 06:52:04
Blood Lymph

blood lymph
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