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39 Cards in this Set
- Front
- Back
what are the 3 stages of wound healing?
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1.actue inflammatory phase
2.proliferative phase-beginning of fibroblastic activity and anglogensis by the epithelial cells 3.maturation phase-involves collagen synthesis and breakdown |
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is this resolution or repair?
the most favorable outcome of healing, complete return to normal |
resolution
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is this resolution or repair?
replacement of damaged and destroyed tissue with scar tissue |
repair
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what are the 3 repair healings?
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primary
secondary tertiary |
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this repair healing consists of taking the place when wound margins are neatly approximated in wounds with minimal tissue loss, require very little sealing and shrinking, ex: paper cuts
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primary
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this repair healing consist of wounds that have significant tissue loss, requires more tissue replacement, take place from edges inward, from bottom upward ex:stage 4 pressure sore
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secondary
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this repair healing consist of healing occurs with the delayed suturing of a wound in which 2 layers of granulation tissue are sutured together ex: contaminated would is left open and sutured close after the infection is controlled
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teritary
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what are some local and systemic factors that affect wound healing:
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shape and location
inadequate blood supply age nutritional status infection smoking obesity diabetes poor general health |
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separation and disruption of previously joined wound edges
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dehiscence
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exaggeration of normal presence of myobibroblast and sustained cell contraction, severe deformity,
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contracture
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scar tissue that extends past the original location of injury
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keloid
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What are some organs and cellular components of the immune system?
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bone marrow(B cell maturation), thymus(T cell maturation), nodes(site for Ag contact and response harbor T and B cells), tonsils, spleen(filter Ags from blood), T and B cells, macrophages, dendritic cells
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T cells originate in the ______ and their function is to?
B cells originate in the _____ and their function is to? |
thymus, protection against viruses
bone marrow, produce a distinct antibody molecule |
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this is a substance foreign to the host that can be stimulated an immune response
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antigen
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what are the 3 primary immunocytes?
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B T and natural killer
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this immunocyte polices the blood and lymph, target virus infected cells and release perforins
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natural killer
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this immunocyte recognizes native Ag, producing Abs against it. have plasma cells and memory cells
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B cells
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this immunocyte recognizes processed Ag, and response by producing cytokines
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T cells
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what are the classes of immunoglublins?
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IgM
IgG IgE IgA IgD |
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this immunoglublin is the first circulating and the first to be made by a newborn and the primary response
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IgM
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this immunoglobulin is the only one to cross the placenta, and is the secondary response most abundant
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IgG
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this immunoglobulin releases histamine and other inflammation allergy mediators
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IgE
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this immunoglobulin is the 2nd most abundant and found in mucus mem.
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IgA
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this immunoglobulin is found on cell membranes of B lymphocytes, differentation and maturation of B cells, dont really know the function
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IgD
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this system inactive until and antigen antibody reaction causes the complement system to activate
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complement system
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immune responses that are initiated through specific Ag recognition by T cells are termed?
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cell mediated immunity
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major effects of the cell-mediated immune response?
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cytotoxicity
memory control hypersensitivity |
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what are the 5 mature T cells
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lymphokine-producing cells
macrophages CD8 cytotoxic cells CD4 helper cells suppressor T cells |
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this is the ability of the immune response to be nonreactive to selfr while producing immunity to foreign agents
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tolerance
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this type of acquired immunity is produced by the host either after natural exposure or immunizations
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active
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this type of acquired immunity does not involve hosts immune response protective preformed Abs are transferred to the recipient via naturally or artifically and is temporary
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passive
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Passive natural immunity is transferred how?
Passive artifical immunity is transferred how? |
maternal immunoglobulins across placenta IgG, or from breast milk
injection of preformed serum Abs |
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Active natural immunity is transferred how?
Active artifical immunity is transferred how? |
contact w. Ag through infection
immunization with Ag |
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How is the transfer of passive immunity from mother to infant?
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across the placenta IgG
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what does it mean if you have IgM and IgA in the infants cord blood?
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immunoglobulins are of fetal orgin so the baby was exposed to intrauterine infection
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what are some factors contributing to the elderlys reduced ability to mount an inflammatory response
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risk for impaired wound healing
increased incidence of other systems fat decreases(not as much protection) declining macrophage function |
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a progressive dysfunction of the immune system from age related changes
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senescence
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what are some changes that occur in the agign immune system?
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more susceptible to dz
autoimmune disease increase decreased response to immunizations |
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why does the autoimmune dz increase as we age?
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lose tolerance to self
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