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Wound Healing
Special Topics
Question | Answer |
---|---|
What term refers to removal of necrotic tissue? | debridement |
What term refers to anything that disrupts the skin's normal integrity? | wound |
What are the 2 wound types? | intentional or unintentional |
What are the 4 phases of wound healing? | 1-Inflammatory 2-Debridement 3-Repair 4-Maturation |
What cell is responsible for initiating wound healing? | platelet |
What 2 things dictate if sutures are placed? | severity and nature |
How long do the vessels constrict for after an injury? | 5-10 minutes |
How long after an injury does the debridement phase occur? | 6 hours |
What 2 cells start the debridement phase by leaking into the wound under the scab? | monocytes and neutrophils |
What term refers to a combination of WBCs and the fluid that leaks into a wound? | exudate |
What phase is a combination of the inflammatory phase and the debridement phase? | lag phase |
When does the lag phase occur? | First 3-5 days |
What phase begins only after blood clot has formed and necrotic tissue/foreign material has been removed? | repair phase |
When does the repair phase begin and end? | begins after days 3-5; ends 17-20 days after injury |
How long after an injury does granulation appear? | 3-5 days |
What color is poor granulation tissue? | white |
What term refers to overgrown granulation tissue found on large animals? | proud flesh |
How soon after an injury will you begin to see new epithelium? | 4-5 days |
______________________ is a result of contraction of the myofibroblasts in granulation tissue. | Wound contraction |
How soon after an injury will you see wound contraction? | 5-9 days |
True or false. No new skin is formed during wound contraction. | True |
During what phase is wound strength at its max level? | maturation |
________________ is formed by crosslinking of collagen fibers. | Scar |
True or false. Scar tissue is stronger than normal tissue. | False |