CHAPTER 11 FORENSICS STUDY GUIDE
if the small intestine is empty and water is found in the large intestine then how lng has the body been dead?
12 or more hours
when does the blood start to pool in the body?
2 hours after death
how long does it take for a body to fully digest a meal and release it from the body?
24 hours
how long does it take for the stomach to empty into the small intestine?
4-6 hours
if the stomach is empty but food is found in the small intestine then how long has the body been dead?
4-6 hours
when does the discoloration become permanent?
after 8 hours
name factors that affect rigor mortis and how long it sets in.
ambient temperature, weight of the body, the body's clothing or lack of it, any illness the person had at time of death, the level of physical activity at the time of death, and sun exposure.
larva
immature form of an animal that undergoes metamorphosis (for example, a maggot)
how can lividity help crime investigators?
it can determine the original position of the boy and if it has been moved.
what are you accessory organs?
liver, gall bladder and pancreas
what is the job of the liver?
make bile
manner of death
one of four means by which someone dies (i.e., natural, accidental, suicidal, or homicidal)
instar
one of the three larval stages of insect development
Explain what happens to the body when it experiences livor mortis.
red blood cells break down and turn a bluish-purple color. with decomposition blood pools in the lower parts of the body.
pancreas
releases insulin which regulates glucose in the blood
job of gall bladder
stores bile
death
the cessation, or end, of life
algor mortis
the cooling of the body after death
cause of death
the immediate reason for a person's death (such as heart attack, kidney failure)
livor mortis
the pooling of the blood in tissues after death resulting in a reddish color to the skin
decomposition
the process of rotting and breaking down
mechanism of death
the specific body failure that leads to death
autolysis
the spontaneous breakdown of cells as they self-digest
pupa
the stage in the insect's life cycle when the larva forms a capsule around itself and changes into its adult form
rigor mortis
the stiffening of the skeletal muscles after death
forensic entomology
the study of insects as they pertain to legal issues
how do you find the temperature of the corpse?
you stick a thermometer into the liver
If undigested food is present in the stomach at the time of death how long has the body been dead?
0-2 hours
how much body heat is lost after every hour after death?
1-1.5
describe the digestive system.
Food is broken down in the mouth by the salivary glands that release amylase which breaks down carbohydrates. then the food is brought to the esophagus where it then goes to the stomach. In the stomach pepsin breaks down protein and then the food goes to the small intestine where it then travels to the large intestine where water is absorbed. The food is then traveled to the rectum and released through the anus.
describe the cycle of rigor mortis.
Rigor begins 2-6 hours after death starting with the head and works its way down. at 12 hours rigor reaches its peak and the entire body is rigid. from 15- 36 hours the body slowly loses rigor starting its way from the head down to the bigger leg muscles. and by 36 hours the body's stiffness will have mostly disappeared.
