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18 Cards in this Set
- Front
- Back
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immune system
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is the body's defense system against infection
- it provides the body with resistance to invading organisms and enables it to fight off invaders once they have gained access - it recognizes, isolates, and destroys pathogens |
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bone marrow
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is the principle site for blood cell formation
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lymphatic system
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returns excess interstitial fluid in the blood, absorbs fats and fat soluble vitamins, and provides defense against disease
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lymphatic vessels
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carry fluid away from the tissues
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right lymphatic duct
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drains lymph from the upper right quadrant of the body
- the thoracic duct drains all the rest |
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where is the thoracic duct?
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the main lymphatic duct in the abd, which passes upward through the diaphragm in the thorax, continuing upward alongside the aorta and esophagus to the neck, where it turns to the left and enters the left subclavian vein
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lymphatic system
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pressure gradients that move fluid through the lymphatic vessels come from the skeletal muscle action, respiratory movements, and contraction of smooth muscle in vessel walls
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lymphatic system
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lymph enters a lymph node through afferent vessels, filters through the sinuses, and leaves through efferent vessels
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lymph nodes
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are round or kidney shapes clusters of mononuclear cells that normally are less than 1 cm in diameter
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body organs that are part of a functioning immune system
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- bone marrow
- lymph nodes - spleen - thymus |
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antigens
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are foreign substances that stimulate a response from the immune system, whereas antibodies are proteins that are produced by the immune system to help eradicate antigens
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innate immunity
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present in the body at birth
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acquired immunity
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develops after birth
- as a result of the body's immune response to specific antigens |
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2 types of acquired immunity
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antibody mediated and cell mediated
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immunodeficiency
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occurs when the body is unable to launch and adequate immune response, resulting in and increased risk of infection
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two main types of leukemia
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myolegenous and lymphocyctic
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allergy or hypersensitivity
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occurs when a normally inoffensive foreign substances stimulates and atypical or exaggerated immune response
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systemic lupus erythematous
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is considered an autoimmune disorder
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