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39 Cards in this Set

  • Front
  • Back
what are the 3 stages of wound healing?
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
is this resolution or repair?
the most favorable outcome of healing, complete return to normal
resolution
is this resolution or repair?
replacement of damaged and destroyed tissue with scar tissue
repair
what are the 3 repair healings?
primary
secondary
tertiary
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
primary
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
secondary
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
teritary
what are some local and systemic factors that affect wound healing:
shape and location
inadequate blood supply
age
nutritional status
infection
smoking
obesity
diabetes
poor general health
separation and disruption of previously joined wound edges
dehiscence
exaggeration of normal presence of myobibroblast and sustained cell contraction, severe deformity,
contracture
scar tissue that extends past the original location of injury
keloid
What are some organs and cellular components of the immune system?
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
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
this is a substance foreign to the host that can be stimulated an immune response
antigen
what are the 3 primary immunocytes?
B T and natural killer
this immunocyte polices the blood and lymph, target virus infected cells and release perforins
natural killer
this immunocyte recognizes native Ag, producing Abs against it. have plasma cells and memory cells
B cells
this immunocyte recognizes processed Ag, and response by producing cytokines
T cells
what are the classes of immunoglublins?
IgM
IgG
IgE
IgA
IgD
this immunoglublin is the first circulating and the first to be made by a newborn and the primary response
IgM
this immunoglobulin is the only one to cross the placenta, and is the secondary response most abundant
IgG
this immunoglobulin releases histamine and other inflammation allergy mediators
IgE
this immunoglobulin is the 2nd most abundant and found in mucus mem.
IgA
this immunoglobulin is found on cell membranes of B lymphocytes, differentation and maturation of B cells, dont really know the function
IgD
this system inactive until and antigen antibody reaction causes the complement system to activate
complement system
immune responses that are initiated through specific Ag recognition by T cells are termed?
cell mediated immunity
major effects of the cell-mediated immune response?
cytotoxicity
memory
control
hypersensitivity
what are the 5 mature T cells
lymphokine-producing cells
macrophages
CD8 cytotoxic cells
CD4 helper cells
suppressor T cells
this is the ability of the immune response to be nonreactive to selfr while producing immunity to foreign agents
tolerance
this type of acquired immunity is produced by the host either after natural exposure or immunizations
active
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
passive
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
Active natural immunity is transferred how?
Active artifical immunity is transferred how?
contact w. Ag through infection
immunization with Ag
How is the transfer of passive immunity from mother to infant?
across the placenta IgG
what does it mean if you have IgM and IgA in the infants cord blood?
immunoglobulins are of fetal orgin so the baby was exposed to intrauterine infection
what are some factors contributing to the elderlys reduced ability to mount an inflammatory response
risk for impaired wound healing
increased incidence of other systems
fat decreases(not as much protection)
declining macrophage function
a progressive dysfunction of the immune system from age related changes
senescence
what are some changes that occur in the agign immune system?
more susceptible to dz
autoimmune disease increase
decreased response to immunizations
why does the autoimmune dz increase as we age?
lose tolerance to self