BU Forensic Pathology
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What factors concerning burial have an effect on the rate of decomposition?
depth of grave, warmth of soil, permeability of coffin, efficiency of drainage of soil, quality of embalming
The Rule of Thumb concerning the rate of decomposition:
1 week in _____ = 2 weeks in _____ = 8 weeks in _____
air, water, ground
Under what conditions does mummification occur?
- an environment of dry heat and good ventilation
- may be complete in 3 to 6 months
What is adipocere?
-a soap or wax-like material that forms when fatty tissues are in a cold wet environment for a prolonged period (cold water)
How can flies be used to estimate an approximate time of death? And what is the life cycle of a fly?
A forensic entomlogist can identify the stage of development of the largest maggot or the most mature form.
- Eggs can be deposited within a few hours, especially on the eyes, nose, and lips.
- Eggs hatch within24 hours to become larvae (maggots)
- Maggots are full grown within a week.
- They feed for 1 week then leave the body to become a puparium from which the adult fly will emerge.
A post-mortem blister may mimic ____.
Intense lividity may mimic ____.
Post-mortem insect and carnivore activity may mimic______.
_______ staining of tissues may mimic bleeding.
What is anthropophagia?
What kind of damage usually produces bloodless wounds?
- -because after death there is no longer any blood pressure
True or False: Determining postmortem interval is not an exact science.
When assessing the time of death, what types of things should you observe?
- rigor and livor
- body temperature
- gastric contents- within 2 to 4 hours of eating, the stomach should be empty
What things should you note at the scene to help estimate time of death?
- -environmental temperature and conditions
- -items at scene- newspaper, phone logs, dishes, mail, lights
- -when was the deceased last seen alive?
- -evidence of deviation from normal routine
- -daily calenders, email habits
The laboratory evaluation of biological materials or fluids from the human body after death is also known as ______ ______.
What are some of the limitations of postmortem chemistry?
- -only reliable in the early postmortem interval or autolysis
- -most substances in the blood used to diagnose disease in the living undergo rapid postmortem changes that are unpredictable
True or False: After death it is possible to diagnose hypoglycemia but not hyperglycemia using postmortem chemistry.
It is impossible to diagnose hypoglycemia after death, but it is possible to diagnose hyperglycemia using glucose vitreous levels.
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