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Determination of death
Determining time of death : An estimated time or date on which the death occurred, through the analysis of cadaveric phenomena present in the body at the time of medical examination Criminology. The death data is valuable information that facilitates and guides the research especially if the circumstances surrounding the death are unknown. No put scientists to determine with accuracy and its calculation is approximate. Inspection and Event Site : Look at SS evidence that establish the victim's activity to occur just before death and its temporal relationship to the time it was done visual inspection. In SS closed is possible to establish activity related fatalities daily habit (eating, sleeping, working, housework, personal hygiene), for items with these habits: lights and appliances on or off, drinking remains , cigarettes, food, order, cleanliness of furniture, dining room: you can drive, according to presentation, the food been or will be, if food debris, their conservation status, characteristics and pans, plates, cups, cutlery, its relationship with number of people who made use of them. Order bedroom, special bed, bedside table objects in, types of clothing. The bathroom , the water heater temperature, recently used soap, wet towels, shaving brush, s in kitchen and inspect the order, cleanliness, type to prepare food or prepared, remains in pots, plates, and the same temperature, humidity dryers. Presence of non-concordant with the characteristics bedrooms and live as the victim (instruments or objects that do not correspond to the place) , presence of biological, blood, hair, semen, vomit, feces, urine, that establish the physical characteristics (dry, wet, smell) the time of death. In SS opened the presence of tools and utensils that can drive activity and the victim and her relationship with the SS Review the body and clothing : See if there is concordance of clothing with the activity that is developed and immediately before death and whether they were used in this activity (spots or other that may indicate its use)
Observe where the body lies (soil, cement, water) factors that determine changes cadaveric phenomena.
The position of the body help to interpret the inconsistency in cadaveric phenomena, as in this convulsive preceded deaths in the earlier rigid and severe, the victim adopting unusual positions.
The cooling is a physical sign irregular, subject to multiple variations depending on the body and the environment in which it is. The body temperature drops a degree per hour, level with the average of 24 hours. Variations depending on the body are * biotype , the obese are cooled more slowly, more fat, * age , old people and children cool faster * c mass antide bodily exposed, dressed corpse, coffin, cool more slowly . Environmental factors such as heat and high humidity slows the cooling, which is due to evaporation that affects the body and explains the weight loss. Dehydration contributes to the emergence of phenomena cadaveric eye: Opacity of cornea, sclera black spot eye outer corner, sinking eyeball and shriveled and the skin when the epidermis has been destroyed. If the drying of tissues and organs is rapid and extensive, mummification occurs.In the drowned , there is the opposite of dehydration, body weight increases. postmortem lividity, after death, cardiovascular activity ceases and the blood is mobilized by gravity, the blood vessels of the body parts but declines , whose position post-mortem determined the area where they are installed and fixed cadaveric lividity. Its coloration can be altered by physical and chemical factors that may suggest the cause of death, dark red color seen in asphyxia. The red lipstick on carbon monoxide poisoning, which has paradoxical lividity (they are in areas opposed to the decline) , whose origin is possibly the paralytic vasodilatation toxic action of CO (no support points) appear to 3 hrs. cause death. More rapidly in death by suffocation, poisoning or cold. More delayed when the death has occurred due to bleeding, anemia or poisoning with arsenic and strychnine. May not exist when the bleeding has been swift and generous and ahogaos bodies and in rivers that constantly change position in the water. Maximum intensity and extent about 8 hrs. being fixed at 13 hrs., persisting until the putrefaction cadaveric tissue destruction begins assessment of environmental conditions, factors affecting the cadaveric putrefaction * temperature : the temperature rise accelerates * humidity increased gravity favors * depth of the pit : the more prof Single Pack less putrefaction * season : greater in summer physical constitution, depends on the greater or less amount of fat (in obese patients is more pronounced)
Extreme ages: less pronounced in the infant to have intestinal flora was similar, in the elderly is also less marked by wasting the years not only the faces change the appearance but also the internal structure of the skin. Putrefaction corpses starts Bacterial single action both within our body through the enzymes released during the transformation of the tissues and the intestinal flora.