Crime Scene Investigation
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Created by:
giulianabatt on June 4, 2012
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25 terms
Terms | Definitions |
|---|---|
 Autopsy | how victim died and why |
| manner of death (4) | accidental, suicide, homicide, or natural |
| algor mortis definition | tempature loss after death |
| rate of algor mortis | 1.4 degress an hour and cools till its room temp |
| livor mortis | "death color" comes from the color of the blood pooling. depends on body position but blood always pools down (ie if lying on back color is lost from front and goes to back) |
| after 2 days of body being dead... | the skin marbles and the face is discolored |
| after 4 days of body being dead... | skin blisters and swells because of CO2 (carbon dioxide) |
| after 6-10 days of body being dead... | blood fluid leaves the eye |
| what is the body farm? | a place where people/students observe different decomposition of bodies in different scenarios |
| what is trace evidence | small amount of evidence |
| what is secondary transfer | evidence transfered from one place to another |
| where does dna come from in hair and what kind of evidence is it? | hair is class evidence unless it has dna on it. dna comes from follicle |
| what is the order of the layers of hair? and how do human and animal hair differ? | cuticle then cortex and medulla in the middle human hair is imbricate animal hair has a thicker medulla |
| what are the 3 structures of fingerprints and which is more/least common | whoral, loop, arch loop = most common arch = least common |
| when are fingerprints formed and what is a delta? | fingerprints formed before birth. a delta is a triangle shape off of a loop on a fingerprint |
| where does dna come from? | hair, blood, saliva, cells, and seman |
| what do restriciton enzymes do? | cute dna at a specific point |
| what are the four bases of dna and do small or large amounts travel farther in gel electrophoresis? | 4 Bases: C,T,G, and A shorter travels farther |
| list natural fibers | cotton, wool, silk, fur, and plant fibers are natural |
| list synthetic fibers | polyester, rayon, and nylon |
| what is warp and weft? | warp is up and down wft is left and right |
| list 3 types of weave patterns | plain, twill, and satin (make sure u know them) |
| 4 types of blood and what each of their antigens are | A: a antigens B: b antigens AB: a and b antigens O: no antigens |
| what is an antigen? | a protein on a red blood cell |
| how are boys and girls different? | boys have thinner pelvis and thicker brow bone |
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