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23 Cards in this Set
- Front
- Back
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What do the lymphoid organs and tissue provide?
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Provide structural basis of immune system
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What do the lymphoid organs and tissue house?
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House phagocytic cells and lymphocytes
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What structures are included in the lymphoid organs and tissues?
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Structures include spleen thymus tonsils and lymphoid tissues
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What is a function of the lymphatic system?
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Returns fluid that leaked from blood vessels back to blood
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What are the three parts the lymphatic system consist of?
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1. Network of lymphatic vessels (lymphatics)
2. Lymph -fluid in vessels 3. Lymph node- cleanse lymph |
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What returns interstitial fluid and leaked plasma proteins back to blood? how many ~?L/day?
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Lymphatic vessels ( lymphatics )
~3L/day |
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What is referred to lymph?
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Once interstitial fluid enters lymphatics
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Lymphatic capillaries are?
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Very very small
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How do the lymphatic vessels flow?
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One way system ;Lymph flows toward the heart
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What do the lymph vessels (lymphatics) include:
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- lymphatic capillaries
- collecting lymphatic vessels - lymphatic trunks and ducts |
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What is the difference between lymphatic capillaries and blood capillaries?
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Lymphatic capillaries are very permeable (take a protein, cell debris, pathogens and cancer cells
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What do endothelial cells do?
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Overlap loosely to form one way minivalves
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Lymphatic capillaries are absent in?
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Absent from bones teeth bone marrow and central nervous system CNS
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What are specialized lymph capillaries presented in intestinal mucosa?
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lacteals
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What is found in the small intestine?
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chyle
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Absorb digested fat and deliver fatty Lymph (chyle) to the blood?
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lacteals
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Lymphatic collecting vessels are similar to veins except:
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- have thinner walls with more internal valves
- anastomosa most frequently(more valves) |
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Collecting vessels in skin travel with:
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Superficial veins
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Deep vessels travel with
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Arteries
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The lymph is delivered into:
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One of two large ducts lymphatic ducts
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Where does the right lymphatic duct drain into?
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Drains right upper arm and right side of head and thorax
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What does the thoracic duct arise as? And what does it drain to?
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cisterna chyli; drains rest of body
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Where does the lymphatic duct empty into ?
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Each empties lymph into Venous circulating at junction of internal jugular and subclavian veins on its own side of body
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