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12 Cards in this Set
- Front
- Back
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what are the 2 ways damaged tissues are repaired?
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-Regeneration (replacement of damaged/dead cells w/ the same cell type
-Fibrosis (filling in injured area with the scar tissue) |
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Describe the process of regeneration.
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1.in an open wound, bv's are broken and bleeding occurs, 2.a clot forms and blocks the escape of blood, a scab forms and covers and protects the damaged area.3.Fibroblasts on either side of wound engage and together w/ surrounding bv's, they form fleshy projections called granulation tissue. Eventually the area is repaired and the scab falls off.
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What do Bv's and Fibroblasts form in the process of regenerating skin?
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granulation tissue: it looks like hamburger
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What happens once the scab falls off the wound in the process of regeneration?
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Epithelial regeneration will then resurface the injured area by increased mitotic activity of stratum basale cells at the edge of the wound.
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What will occur if the wound is severe or large, and what is it?
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Fibrosis, filling in injured area with scar tissue.
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What is a severe example of scar tissue?
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Keloid (occurs in genetically predisposed individuals)
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What do large breaks in the skin require?
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suturing
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What bacterium is responsible for impetigo and scalded skin syndrome?
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Staphyloccoccus aureus (Staph aureus)
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What is impetigo?
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A highly contagious skin disease of children.
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What amy occur as a complication of impetigo, where the bacteria makes a toxin that destroy the STRATUM GRANULOSUM?
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Scalded skin syndrome
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What is the difference between impetigo and scalded skin syndrome
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Scalded skin syndrome is where the stratum granulosum is destroyed.
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What controls the infection of scalded skin syndrome and impetigo?
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White blood cells and by the immune system.
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