Term
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Definition
-highly specialized lymphatic capillaries
-lymph draining from the digestive viscera is milky white rather than clear
**lacteals play a major role in absorbing digested fats from the intestine |
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Term
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Definition
-formed by the union of the largest collecting vessels, and drain fairly large areas of the body
-major trunks are lumbar, bronchomediastinal, subclavian, and jugular
Right Side (top to bottom)
-internal jugular veins
-R lymphatic duct
-R sublcavian vein
Left Side (T to B)
-internal jugular veins
-L subclavian vein
-entrance of thoracic duct into vein
-thoracic duct |
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Term
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Definition
| -drains lymph from the right upper limb and the right side of the head and thorax |
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Term
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Definition
| -receives lymph from the rest of the body |
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Term
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Definition
| -the milking action of active skeletal muscles is the main promoter of lymph flow as well as pressure changes in thorax during breathing, and valves to prevent backflow |
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Term
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Definition
| -anything that prevents the normal return of lymph to the blood, such as blockage of the lymphatics by tumors or removal of lymphatics during cancer surgery |
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Term
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Definition
-they are the principal lymphoid organs in the body
2 Main Functions
1)As lymph is transported back to the bloodstream, the lymph nodes act as lymph "filters"
2)They help activate the immune system |
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Term
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Definition
-the largest lymphoid organ in the body
-soft and blood-rich and about the size of a fist
3 main functions
1)Stores and salvages some of the breakdown products of red blood cells for later use (i.e. Iron)
2)It stores blood platelets
3)It is thought to be the site of erythrocyte production in the fetus |
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Term
| White vs Red Pulp Clusters |
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Definition
WHITE
-forms "cuffs" around the central arteries
-involved with the immune functions of the spleen
RED
-essentially all remaining splenic tissue and the splenic cords
-most concerned with disposing of worn-out red blood cells and bloodborne pathogens |
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Term
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Definition
-bilobed and has important functions early in life
-The thymus is the site where T Lymphocyte precursors mature to become immunocompetent lymphocytes |
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Term
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Definition
-are the simplest lymphoid organs
-form a ring of lymphatic tissue around the entrance to the pharynx (throat)
-named according to location |
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Term
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Definition
-are located on either side at the posterior end of the oral cavity
-these are the largest tonsils and the ones most often infected |
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Term
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Definition
| -a lumpy collection of lymphoid follicles at the base of the tongue |
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Term
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Definition
| -in the posterior wall of the nasopharynx |
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Term
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Definition
-aggregated lymphoid nodules
-large clusters of lymphoid follicles
-located in the wall of the distal portion of the small intestine (ilium) |
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Term
| Peyer's Patches, the appendix, and the tonsils are all located where? |
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Definition
| -they are all located in the digestive tract |
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