Terminology Flashcards
Avascular
Lacking in blood supply
Epidermis
Outermost skin layer - avascular
Dermis
Inner most skin layer - vascular
Basement membrane
Structure separating dermis and epidermis
Hypodermis
Connective tissue below the dermis
Primary wound healing
Re epithelialisation when the outer layer grows closed. Mostly involves the epidermis c no loss of tissue.
Secondary wound healing
Edges cannot be brought back together. Wound fills with granulation tissue, then scars, then re epithelialises. Can full or partial thickness.
Tertiary wound healing
Wounds that are intentionally left open to reduce oedema or will fighting infection.
Inflammation phase of wound healing
Inflammation response occurs. Exudate is released to nourish cells and flush debris. Growth factor is released to stimulate fibroblasts
Proliferation phase of wound healing
Fibroblasts produce collagen and others to produce new tissue. Collagen synthesis assists formation of granulation tissue. New capillary growth. Wound contraction. Epithelialisation occurs.
Maturation phase of wound healing
Wound is fully covered in epithelial tissue. Maturation and remodelling of the skin occurs to reduce scarring
Tissue type: Necrotic
Dead tissue.
Black.
Needs debridement
Tissue type: Slough
Accumulation of dead cells in exudate.
Yellow.
Needs removal.
Needs to be in a moist environment to prevent gardening.
Tissue type: Granulating
Healthy tissue that fills wound to allow epithelialisation.
Red and moist.
Needs a moist environment.
Tissue type: epithelialising
Pink, translucent c minimal exudate.
Requires protection against shear friction - delicate.
