Healing and Gangrene.

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Presentation transcript:

Healing and Gangrene

Gangrene: It’s a necrosis with putrefaction, massive necrosis “ large tissue or whole organ. It has 3 types: 1- Dry or senile. 2- Moist. 3- Infective or Gas gangrene.

1- Dry gangrene “Gross”:

Healing: Replacement of damaged tissue by new, healthy, living tissue. Either by: 1- Regeneration mechanism or 2- Scaring “fibrosis”, Organization. Regeneration is the replacement of tissue by same type of cells. Organization is the replacement of tissue by Granulation tissue.

2- Granulation tissue:

3- Granulation tissue:

4- Primary union:

5- Secondary union:

6- Myocardial scaring:

7- Repair after myocardial infarction: