Exam ! Flashcards
repair phase
(pie crust)- scar formation
- fill in subcutaneous tissue & muscle tissue c scar tissue
how long for most wounds to heal?
2-4 wk
inflammatory phase
time: 4-6 days
clear away dead cells and bacteria
first vasoconstriction then vasodilation
hemostasis
inhibits O2 of surrounding tissue: vascocontriction
macrophages function
phagocytosis
proliferation phase time frame
time: 4-6day -> 21 days (week 1-3)
stages of proliferation phase
re-epithelialization- new skin
fibroplasia- granulation (cake mix)
neovascularization- new blood supply
contraction- decrease wound size
fibroplasia
(proliferation phase)- granulation
- make collagen: make component of granulation tissue
contraction
process occurs as wound closes due to loss of tissue
maturation/remodeling phase
Time: 21-> 2-3 yrs
tensile strength
collagen and elastin formation
abrasions
caused by tangential shearing of skin by rough surface
ex/ MVA - road rash
primarily partial thickness : epidermis & dermis
avulsion
portion of skin caught on sharp object while body is moving away & flap of skin is removed
crush wounds
heavy object falls onto a portion of a person’s body, splits the skin & may even shatter or tear underlying structures
open fractures
sharp piece of bone penetrate & teat surrounding soft tissue & skin which created an open wound
cuts/incisions
characterized by slice wound created by a sharp object which leaves straight/even edges