FRSC 202 EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Determining A Reasonable & Probable Range of Death
- Establish a window
1) When could the death have occurred?
2) When was the body found?
3) When was the deceased last known to be alive?
- Use scene markers to allow positioning of the time within the window
1) Phone calls made/received
2) Meal consumed last
3) State of dress
- Adjust the preliminary opinion with additional data
1) Degree of rigor
2) Entomological activity
3) Sun shining? AC blowing?
Early Changes After Death
- Cessation of respiration
- Cessation of circulation
- Skin pallor
-Muscle relaxation
,-Eye changes - cornea, retina
-Blood coagulation and fluidity
Algor Mortis
- Cooling
- Body temperature is a narrow range, not a fixed temperature
- Activity
- Illness
-Decomposition
- Infection
- Absorption of heat
Livor Mortis
- Discoloration
- Can be seen in 2-4 hours. Best seen in 8-12
Rigor Mortis
- Stiffening
- Heat accelerates the process
- Cold onset: immediate
- Manifested: 1-6 hours
- Maximum: 6-24 hours
- Disappears: 12-36 hours
- Decelerates the process
- Is a physical change
- Interpretation is Unreliable
, 1) Illness
2) Temperature
3) Activity before death
4) Physical conditions where the body is placed or found
5) May be poorly formed in the young or the old
Bodies Cool By
- Radiation
- Convection
- Direct transfer
- Any factor that influences heat loss will affect the rate of cooling
-Careful consideration of the scene, clothing, victim size, and activity have to be
considered in estimating cooling rate
Tardieu's Spots
- Gravity causes capillaries in a small area to rupture, resulting in circular areas of skin
hemorrhage
- Size is important: 4-5mm or larger
Petechial Hemorrhage
- A small red or purple spot on the skin (fine muscles in neck, under eyelids, etc),
caused by a minor bleed from broken capillary blood vessels
- Can be suggestive of asphyxia
- Size is important: 1mm or larger
Tache Noir
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Determining A Reasonable & Probable Range of Death
- Establish a window
1) When could the death have occurred?
2) When was the body found?
3) When was the deceased last known to be alive?
- Use scene markers to allow positioning of the time within the window
1) Phone calls made/received
2) Meal consumed last
3) State of dress
- Adjust the preliminary opinion with additional data
1) Degree of rigor
2) Entomological activity
3) Sun shining? AC blowing?
Early Changes After Death
- Cessation of respiration
- Cessation of circulation
- Skin pallor
-Muscle relaxation
,-Eye changes - cornea, retina
-Blood coagulation and fluidity
Algor Mortis
- Cooling
- Body temperature is a narrow range, not a fixed temperature
- Activity
- Illness
-Decomposition
- Infection
- Absorption of heat
Livor Mortis
- Discoloration
- Can be seen in 2-4 hours. Best seen in 8-12
Rigor Mortis
- Stiffening
- Heat accelerates the process
- Cold onset: immediate
- Manifested: 1-6 hours
- Maximum: 6-24 hours
- Disappears: 12-36 hours
- Decelerates the process
- Is a physical change
- Interpretation is Unreliable
, 1) Illness
2) Temperature
3) Activity before death
4) Physical conditions where the body is placed or found
5) May be poorly formed in the young or the old
Bodies Cool By
- Radiation
- Convection
- Direct transfer
- Any factor that influences heat loss will affect the rate of cooling
-Careful consideration of the scene, clothing, victim size, and activity have to be
considered in estimating cooling rate
Tardieu's Spots
- Gravity causes capillaries in a small area to rupture, resulting in circular areas of skin
hemorrhage
- Size is important: 4-5mm or larger
Petechial Hemorrhage
- A small red or purple spot on the skin (fine muscles in neck, under eyelids, etc),
caused by a minor bleed from broken capillary blood vessels
- Can be suggestive of asphyxia
- Size is important: 1mm or larger
Tache Noir
