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death

death. Manner...how did they die???. Natural Accidental Suicidal Homicidal Undetermined. Cause...why did they die???. Heart attack Hanging Shooting Blunt force trauma. Mechanism....what happened to the body for death to occur???. Heart stopped Loss of blood

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death

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  1. death

  2. Manner...how did they die??? • Natural • Accidental • Suicidal • Homicidal • Undetermined

  3. Cause...why did they die??? • Heart attack • Hanging • Shooting • Blunt force trauma

  4. Mechanism....what happened to the body for death to occur??? • Heart stopped • Loss of blood • Cessation of brain function • Respiratory arrest

  5. You make the call…. • Victim found with knife in chest • Manner? • could be homicide, suicide, accident • Cause? • could be puncture wound • Mechanism? • could be loss of blood

  6. More calls… • Victim found on train tracks • Manner? • accident or suicide or homicide or natural • Cause? • blunt force trauma or heart attack • Mechanism? • cessation of brain function or heart stopped

  7. One more… • Victim found on bathroom floor • Manner? • Natural…accident…homicide • Cause? • We would need more information • Mechanism? • We would need more information

  8. And more… • Victim found with empty pill bottle • Manner? • Accident…suicide…homicide • Cause? • Heart attack • Mechanism? • Heart stopped

  9. How do you determine time of death?

  10. Livormortis...death color • Blood spills from tissues to lower body parts • Blood turns purple • Lividity…pooling of blood • Lividity begins 2 hours after death • Up to 8 hours, if body is pressed, color disappears • After 8 hours, if body is pressed, color remains

  11. Rigor mortis...death stiffness • Begins within two hours • Starts at head • Most rigid at 12 hours • Disappears between 36-48 hours

  12. Algor mortis...death heat • Temperature taken in the liver • Body cools at a rate of 1.4 F (.78 C) each hour for the first 12 hours • Body cools at a rate of .7 F (.39 C) each hour after 12 hours • Continues to cool to reach surrounding temperature

  13. Turn to page 316 of text

  14. Stages of decomposition • Within two days • Cells break down, skin discolored • After four days • Skin blisters, abdomen swells • Six to ten days • Corpse bloats and may burst, body liquefies, skin falls off

  15. You make the call Choose: A. Within 2 days.B. After 4 days.C. Within 6-10 days. • Fluids begin to leak from body openings as cell membranes rupture. • Discoloration of the face. • The skin sloughs off. • The skin blisters. • Green and purplish staining from blood decomposition. • The corpse bloats. • Eyeballs and other tissues liquefy. • The abdomen swells. • Marbling appearance on the skin.

  16. The answers • 1. C • 2. A • 3. C • 4. B • 5. A • 6. C • 7. C • 8. B • 9. A

  17. Other methods • Stomach content • How much digestion has occurred • 4-6 hours for food to leave stomach • 12 more hours to leave the small intestine • Insects • Determine stage of development

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