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Decomposition of Human Body

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Presentation on theme: "Decomposition of Human Body"— Presentation transcript:

1 Decomposition of Human Body
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2 5 stages of decomposition
Initial decay Putrefaction Black putrefaction Butyric fermentation Dry decay

3 Initial Decay 0-3 days after death
Bacteria in digestive tract start eating intestines, break through and begin feeding on surrounding organs Individual cells break down, (autolysis) releasing cell contents into body

4 Putrefaction 4-10 days after death
Body will be bloated from build-up of gases released by bacteria living in intestines Skin blisters Build-up of fluids from ruptured cells and intestines Skin begins slipping stinks

5 Putrefaction

6 Black Putrefaction 10-20 days after death
Body begins to collapse and black surfaces are exposed Bloated body collapses and leaves a flattened body Loss of body fluids from body

7 Black Putrefaction

8 Butyric Fermentation 20-50 days Little to no flesh and body dries out
Cheesy smell (caused by butyric acid) Surface of body in contact with ground may mold as body ferments

9 Butyric Fermentation

10 Dry decay 50-365 days after death
Body is dry and continues to decay very slowly because of lack of moisture Mostly reduced to hair and bones Eventually the hair will disappear

11 Dry decay

12 Picture of lividity

13 Questions What factors do you think would speed up/slow down the rate of decomposition? How does the state of decomposition assist scientists in determining time of death?


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