Modalities Ch. 7 Flashcards
three stages of healing
inflammation
proliferation (including epithelialization)
remodeling
which stages are the repair stages
proliferation and remodeling
lymphatic system
- responsibilities
- passive processes
responsibilities -pick-up -transport passive processes -no pressure like blood pressure -vessel walls do not contract -highly effected by external forces
role of therapeutic modalities/exercise on the lymphatic system
increasing lymphatic pick-up = promote healing ways to promote healing speed -muscular contraction -passive ROM -massage -compression
keloid
a growth of extra scar tissue that is left over after an injury heals
lymphatic system does not clean up all the free protein
reconstitution
the replacement of damaged cells with identical cells
perfect vs. imperfect reconstitution
perfect: no evidence of damage remaining
imperfect: scar tissue remaining
cells that use reconstitution
cells with a high turnover rate
- skin cells
- liver cells
replacement
the replacement of injured cells with simpler cells
cells that use replacement
muscle tissue
conncetive tissue
CNS tissue
primary union
small cut
fills and heals very rapidly
secondary union
large gap or hole
repalcement is much slower and leaves a bigger scar
epithelialization
the process of developing a membranous tissue covering over exposed tissue or organs
function of epithelialization
superficial abrasion or blister
-majority of all healing is epithelialization
severe injuries
-protects the body from assault by outside organisms as the wound heals
angiogenesis
formation of new blood vessels
part of the proliferation phase
capillary budding
primary mechanism of the vascular phase of the repair process
capillary arcade
network of capillary arches
-adjacent capillary buds migrate toward one another, meet, form together, and create the capillary arch
collagen
fibrous protein found in all types of connective tissue (ligaments, tendons, scar tissue)
collagenization
manufacturing and laying down of collagen in the wound
type 3 collagen
initial strands arranged haphazardly within damaged tissue
2-4 days after injury onset
type 1 collagen
replaces type 3
aligns in parallel fashion
around day 14
tensile strength
amount of force damaged tissue can take before breaking
-depends on collagen type
exercise role in collagen structuring
stimulates circulation (increases oxygen flow) which aids healing tissue and collagen restructuring -provides lines of force which guide collagen restructuring
two phases of remodeling
contraction
restructuring
contraction
collapsing of capillary arcade
compressed by surrounding collagen
restructuring
collagen is restructured
scar is more compact/concave
gives scar greater strength
myofibroblasts
cell appears between fibroblast and a smooth muscle cell
wound contraction
pulls the sides of the wound together to close it
exercise role in remodeling
helps align collagen fibers into parallel lines in line with the lines of force
final phase of wound healing
stimulates circulation and tissue healing
nutrition role in remodeling
vitamins are essential to healing, along with trace elements
