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History
Wound healing
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Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue.
Deep wound on shin with stitches healing over five weeks
Deep wound on shin with stitches healing over five weeks
A fluorescence micrograph of cells in Drosophila larvae healing after a puncture wound. The arrow points to cells that have fused to form syncytia, an
A fluorescence micrograph of cells in Drosophila larvae healing after a puncture wound. The arrow points to cells that have fused to form syncytia, and the arrowheads point to cells that are oriented to face the wound.
A scab covering a healing wound
A scab covering a healing wound
Image: Hand Abrasion 32 minutes after injury
Image: Hand Abrasion 32 minutes after injury
Hemostasis
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In biology, hemostasis or haemostasis is a process to prevent and stop bleeding, meaning to keep blood within a damaged blood vessel. It is the first stage of wound healing. Hemostasis involves three major steps:vasoconstriction temporary blockage of a hole in a damaged blood vessel by a platelet plug blood coagulation
Aggregation of thrombocytes (platelets). Platelet-rich human blood plasma (left vial) is a turbid liquid. Upon addition of ADP, platelets are activate
Aggregation of thrombocytes (platelets). Platelet-rich human blood plasma (left vial) is a turbid liquid. Upon addition of ADP, platelets are activated and start to aggregate, forming white flakes (right vial)