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| What are the functions of the lymphatic system? |
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Definition
1) Returns proteins to the blood
2)Filters antigens (foreign substances) from the lymph
3)Delivers fats absorbed in the gut to the blood |
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Term
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Definition
| discontinuous capillaries that take in substances too large to reenter the blood capillaries |
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Term
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Definition
-When proteins and water remain in the extracellular space
-removal of the axillary lymph nodes disrupts lymphatic drainage of the limb |
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Term
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Definition
| Drains lymph from 3/4 of the body |
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Term
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Definition
| Drains lymph from 1/4 of the body |
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Term
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Definition
| Controlled by: valves, compression as neighboring muscles contract, negative pressure in thorax |
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Term
| How many Lymph nodes does lymph flow through before entering the blood? |
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Definition
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Definition
| Destroys antigens in the lymph before returning it to the blood |
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Term
| Lymph node is made up of two parts? |
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Definition
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Term
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Definition
| -masses of lymphocytes, site of immune response |
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Definition
| -macrophages, nonspecific destruction of antigens by phagocytosis |
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Term
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Definition
| caused by extensive division of lymphocytes |
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Term
| Knowing where lymph from different parts of the body drains is important for treating what? |
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Definition
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Term
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Definition
-tumor cells can easily enter the discontinuous lymphatic capillaries
-allowing cancer to spread(metastasize)
-nearby lymph nodes are usually removed to look for metastasis
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Term
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Definition
| -aggregations of macrophages and lymphocytes that detect and destroy antigens |
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Term
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Definition
| tonsils, appendix, microscopic nodules in the gut, spleen |
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Term
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Definition
surround the opening into the pharynx, so that you can detect and destroy antigens as they enter the body
-lingual
-palatine
-pharyngeal |
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Term
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Definition
| organ at the junction between the small and large intestines that destroys antigens in the gut |
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Definition
| infection of appendix that can be dangerous if the appendix ruptures because the infection fills the abdominal cavity |
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Definition
-removes antigens from the blood
-destroys damaged red blood cells |
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Definition
-masses of lymphocytes(WBC's) in spleen
-site of immune response by lymphocytes |
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Term
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Definition
-elaborate networks of discontinuous blood capillaries
-site of nonspecific antigen destruction (phagocytosis) |
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Term
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Definition
-lymphocytes in the white pulp divide extensively when trying to destroy the virus
-causes massive enlargement of the spleen (splenomegaly) |
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