Module 10: Blood Spatter Analysis Flashcards
1
Q
Blood Spatter Analysis
A
Analyze patterns of bloodstains
2
Q
What can be inferred from blood spatter?
A
- direction blood origin
- angle of the blood droplet on the surface
- location/position of victim at the time bloody wound as inflicted
- movement of bleeding individual
- minimum number of blows that struck a bleeding victim
- approximate location of an individual delivering blows that produced a bloodstain pattern
3
Q
Blood droplet
A
- spherical shape until contact on a surface
- same height, angle, surface = stains w/ same basic shape
4
Q
Types of Bloodstains
A
- passive bloodstains
- projected bloodstains
- expiration bloodstains
- transfer/ contact bloodstains
- impact bloodstains
- gunshot spatter
- forward spatter
- back spatter
- cast-off spatter
5
Q
Passive Bloodstains
A
- created by gravity
- pools of blood, as in tulo lang
6
Q
Projected Bloodstains
A
- force is applied to the blood source
- injury to a main artery/ heart
7
Q
True or False
Each large spurted stains does not correspond to a heart pump.
A
False
8
Q
Expiration bloodstains
A
- expelled from mouth or nose coz’ of internal injury
9
Q
Transfer or contact bloodstains
A
- bloody object/body comes in contact with a surface
10
Q
What is the most common bloodstain pattern?
A
Impact bloodstains
11
Q
Gunshot spatter
A
- characterized by both forward spatter (exit wound) and back spatter (entrance wound)
12
Q
Forward spatter
A
- projected outward
- away from the source
13
Q
Back spatter
A
- backward from the source
- talsik pabalik sa nanakit
- potentially deposited on the object or person who created the impact
14
Q
Some blood enters the gun muzzle due to back spatter
A
Drawback effect; indicates close-range firing
15
Q
Area of convergence
A
- location on a 2d plane from which the drops originated
- convergence of straight lines following the tails of ind. bloodstains.
