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Lecture 8 - Establishing Time Since Death
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- Arizona State University
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M1: Osteology, Anthropology& Forensic Context
Lecture 8
Establishing Time Since Death
TOPICS FOR LECTURE 8
o The Mortises
Rigor Mortis
Processes of Livor Mortis
Alvor Mortis
Death and
o Autolysis
Decomposition o Putrefaction
o Forensic Entomology
o Skeletal Deterioration
EXTERNAL FACTORS
o Insects, carnivores, exogenous bacteria, and fungi
INTERNAL FACTORS
o AUTOLYSIS
Process of Results from cell death and action of enzymes that work
Decomposition against the cell and destroy it
o PUTREFACTION
Consumption of the body by endogenous bacteria
Consumption from the “inside out”
Chemical binding of muscle fibers
Muscles lock in place
Apparent 1-2 hours
Complete Stiffness 12 hours
Releases 24-48 hour
Rigor Mortis
WATCH OUT FOR the progression being highly specific
o Hot Environment = Quicker Rigor Mortis
o Cold Environment = Slower Rigor Mortis
o Carbon Dioxide Poisoning = Slower Rigor Mortis
o Body, Built = Slower or No Rigor Mortis
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