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host defense 4/21 innate immunity

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Question
Answer
the rsistance to infection and disease   immunity  
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although immunity can be though af being maintained by an __ is is actuality dependent on other structures   immune system  
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immune mechanisms are divided into to categories   innate (non specific) and adaptive/acquired (specific immunity)  
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the ability to resis infection and disease that is built in or present at birth   innate immunity  
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aquired immunity involves some thype of interaction with an external agen called an   antigen  
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__ provied defense against diff types of pahtogens as it is non specific   innate  
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__ provied the first line of defense againset pathogens   skin and mucous membranes  
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__ cover the external surfaces of our bodies and connects with mucous membranes in oral and anal openings   dry skin  
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__ cover the internal surfaces of our bodies   mucous membranes  
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skin and mucous membranes provide both __ and __ barries against pathogens   mechanical (physical) and chemical barries  
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__ is composed of epithelial cells supported by a dermis   epidermis  
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__ is a layer of dense connective tissue   dermis  
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___ is composed of stratified squamous epithelium   epidermis  
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cells at skin surgace are highly ___   keratinized  
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__ means having high levels of keratin protens   keratinized  
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___ are insoluble fibrouse proteins that help make the skin surface agains mechanical barries   keratin proteins  
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cells at skin surface are ___ so the are constantly taking microoraganisms with them   dead and being shed  
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the dermis forms a ____ like barrier that is hard to penetrate   tough lether like barrier  
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__ is a long fibrous protein the breat tensil strenght and is part of the dermis   collagen  
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skin surface is __ due to evaporation of water   salty  
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salk in association with keratin makes the skin surface __   hypertonic  
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skin surface is often __ with a pH of 5.5   acidic  
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__ and __ produced by sevaceous glands help waterproof skin   oils and waxes  
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mucous membrances are coverd with a thick sticky material called   mucus  
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repiratory epithelium is __ and the __ sweep pathogens trapped in mucus up and out   ciliated and cilia  
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secreations associated with moist surfaces contain __ enzymes   lysozyme enzymes  
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lysozyme enzymes kills Gram + cells bye causeing   hydrolysis of peptidoglycan  
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lysozyme also acts as an __ making particles more attractive to phagocytes   opsonin  
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mucous membranes are equipped with antibodies in the isotype __   IgA  
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__ care capable of binding with and immobilizing pathogens, causing opsonization or neutralizaing toix bacterial products   isotype IgA  
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phagocytic WBC include   monocytes and neutrophiles  
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large agranular leukocytes forming 3-8% WBC circulation   monocytes  
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monocytes are produced by bone marrow stem cells called   monoblasts  
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monocytes pass through vessel walls by a process called   diapediesis  
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monocytes within the tissues are then referred to as __ or __   histiocytes or macrophages  
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monocytest entering the liver are called   Kupffer cells  
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monocytes entering lymphatic tissues are then called   dendritic macrophages  
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monocytes consume particles coated with ___   opsonizing proteins (compliment factors, antibiodies)  
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monocytes can recognie certain pathogens by means of __ on their cell surfaces   pattern recognition receptors  
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fallowing phagocytosis materials are digested within __ by enzymes supplied by lysosome   phagosomes or food cacules  
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a condition of having high # of monocytes in bloodstream   monocytosis  
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monocytes then to increan in number during   chronic infections and stress respponses  
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neutrophiles aka   polymophonuclear leukocytes  
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medium sized granular leukocytes forming 70% of WBC circulating   neutrophils  
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neutrophils display ___ within tissues   positive chemotaxis  
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neutrophils are attracted by what 3 chemicals   interleukins-8, gamma interferon and compliment C5a  
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__ have a half life of 4-10 hours in the bloodstream and 1-2 days in tissues   neutrophils  
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an increas in the number due to acute bacterial infection or inflammatory responses   neutrophilia  
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Created by: JohnPink