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33 Cards in this Set
- Front
- Back
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Primary lymphatic organs
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-Red bone marrow
-Thymus |
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Secondary lymphatic organs
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-Lymph nodes
-Tonsils -Spleen |
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Filaments..
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Anchor to connective tissue
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Flow of lymph
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Lymphatic capillaries>collecting vessels>lymphatic trunks>collecting ducts>subclavian vein
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Collecting ducts
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-Right lymphatic duct
-Thoracic duct |
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Lymph node functions
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-Filters using macrophages
-Activates immune system |
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Lymph node structure
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-Bean-shaped capsule
-Trabeculae |
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Regions of lymph node
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-Cortex (outer)
-Medulla (inner) |
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Lymph circulation
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Flow stagnates
-allows lymphocytes & macrophages to work |
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Bubo
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-Infected lymph node; becomes inflamed when overwhelmed by antigens
-Can become secondary cancer site |
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Hodgkin's Lymphoma
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Cancer originating from lymphocytes;
Survival rate >90% w/ early detection |
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Elephantiasis
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-Blockage of lymph system, results in edema
-Caused by filarial worms, spread by mosquito |
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Tonsils
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Patches of lymphoid tissue around pharynx
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Pharyngeal tonsils
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Posterior wall of nasopharynx
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Palatine
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-Largest
-Posterior end of oral cavity -Most commonly infected |
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Lingual tonsils
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At base of tounge
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Tubal tonsils
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Around opening of auditory tubes
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Tonsillitis
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Inflammation of palatine tonsils
Usually caused by streptococcus |
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Red pulp
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Concentration of erythrocytes
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White pulp
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Lymphocytes & macrophages
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Splenectomy
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Removal of spleen
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Overactive spleen leads to..
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-Anemia or
-Leukopenia |
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T-Lymphocytes
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Developed in thymus
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2 modes of defense
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-Specific
-Nonspecific |
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Nonspecific
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-Skin
-Mucous membranes -Fever, inflammation -include macrophages, NK lymphocytes & neutrophils |
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Specific
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-Humoral immunity
-Cellular immunity -T & B lymphocytes are antigens |
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Natural killer (NK) cells
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-Attack & kill cells
-Immunological surveillance |
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T lymphocytes (T cells)
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-Thymus dependent
-Cytotoxic t cells -Helper t cells -Memory t cells |
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B lymphocytes (B cells)
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-Plasma cells
-Secrete antibodies |
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Immunocompetence (IC)
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-B&T cells
-develop antigen receptors on their surface -allow them to recognize, bind & respond to antigens |
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Lymphatic vessels begin as...
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Lymph sacs
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Form from...
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Mesoderm
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Anaphylactic shock
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Catastrophic circulatory failure
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