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14 Cards in this Set
- Front
- Back
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What do lymph nodes do?
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helps protect the body by removing foreign material such as bacteria and tumor cells.
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Lymph is transported from the lymph capillaries through successively larger lymphatic vessels referred to as?
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Lymphatic collecting vessels.
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Drains the lymph from the right arm and the right side of the head and thorax.
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right lymphatic duct
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What is the outer part of the node?
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cortex
contains collections of lymphocytes called follicles. |
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Where are the phagocytic macrophages located in the lymph node?
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Medulla
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Describe the flow of lymph through nodes
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1.enters the convex side through afferent lymphatic vessels
2. flows through a number of sinuses inside the node 3. leaves through the hilum via efferent lymphatic vessel. |
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What are the lymphoid organs?
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The spleen
(filters blood, destroys worn out blood cells, acts as a blood reservoir) Thymus functions at peak levels only during childhood. Produces hormones thymosin.(memory cells) Tonsils traps and removes bacteria and other foreign materials (tonsillitis is caused by congestion with bacteria) Peyer's Pathes - small intestine captures and destroy bacteria in the intestine. Tonsils |
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Describe mucosa-associated lymphatic tissue.
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MALT acts as a sentinel to protect the upper respiratory and digestive tracts from the never-ending attacks of foreign matter entering those cavities.
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What Nonspecific defense system?
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First line of defense Skin, mucous membranes.
Responds immediately to protect the body from all foreign substances. |
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What is Specific defense system?
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attack particular foreign substances.
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What do lysozyme?
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saliva and lacrimal fluid enzyme that destroy bacteria.
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What are natural killer cells?
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"police" the body in blood and lymph
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What is a Complement?
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Combination of 20 different proteins. That will function in a cascade like function needed for repair.
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What is a interferon?
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Is a protein released by a virus infected cell to protect all other healthy cells.
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