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page 308-322

death- the cessation of life 4 manners of death- natural, accidental, suicidal,, and homicidal

natural- body functions stop working accidental- such as a car accident suicidal- purposely killing of ones own person homicidal- death cause by another person

cause of death- diseas, physical injury, stroke, and heart attacks are a few examples

homcides- shootin, burning, drowning, hanging, suffocation

mechanism of death- describes the change in the body that is caused by the death, loss of blood (shooting)

time of death- time of death could rove suspects innocent due to their time and place

livor mortis- roughly death color, as body decomposes the blood pools in lower section of body and thus leaves the rest of the body pale

lividity can begin in an hour and will be permanent after about 8 hours, temperature of the body is affected by time of death, weather conditions can speed up or slow down the lividity process

shows how the body was laying or if it had been moved. such as if it was sittin it would pool to thighs and butt and if it got moves it would ool around wherever the part closest to the ground was

rigor mortis- death stiffness, after about 12 hours body is in its stiffest part, after that it slowly begins to relax after about 48 hours the corpse is fully relaxed -caused by the accumulating calcium in the muscles and are constantly contracted

things that factor rigor mortis time - ambient tempurature -weight - body fat slows down rigor mortis(stores oxygen) -type of clothing -illness(if fever it speeds up) -level of activity before death - sun exposure

algor mortis- death heat and describes body temp after death after about an hour body cools at about .78º per hour stomach contents can determine when the last meal was(0-2 hours, undigested) 2. empty stomach but full intestine( 4-6 hours) 3. large intenstine full (more the 12 hours)

stages of decomposition 1. within two days after death - cell autolysis begins -green and purplish staining occures from blood decomp -face becomes discolored 2.after 4 days - skin blisters - abdomen swells 3. within 6-10 days - corpse is bloated with carbon dioxide - fluids start to leak from body as cells rupture - eyeballs and other tissues liquefy - skin sloughs off decomposition- decay of a body forensic entomology- studies weather conditions around body (temp moisture, wind)

if a corpse contains blowfly eggs then less than 24 hours if contains third stage larva then 4-5 days if contains pupae then 18-24 days