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integumentary system

epidermal and deep wound healing

TermDefinition
1 epidermal wound healing Basal epidermal cells break contact with the basement membrane
2 epidermal wound healing Cells then enlarge and migrate across the wound
3 epidermal wound healing Continue to move until contact with like cell in made, contact inhibition
4 epidermal wound healing Cells will change direction until contact is made on all sides
deep wound healing 4 phases
Inflammatory Phase: blood and interstitial fluid are sent to the injury site and form blood clot (temporary fix). Mesenchymal cells develop into fibroblasts (form scar tissue).
Migratory phase clot becomes a scab, epithelial cells migrate beneath the scab to bridge the wound. Fibroblasts form scar tissue damaged blood vessels begin to regrow.
Proliferative phase extensive growth of epithelial cells beneath the scab, collagen fibers (from fibroblasts) form in random patterns
Maturation phase scab comes off, collagen fibers become more organized and epidermis is restored to normal.
skin itching caused by the release of histamines
wrinkles aging = losing fat under the skin and thinning of the epidermis.
wrinkles production of less sebum after menopause
Created by: leela saritha
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