Blood Basics
What are the two functions of the blood?
To transport and defend
What is the type of bloodstain pattern when there is a pattern left on a surface after a bloody object is left on it?
Transfer pattern.
How do you determine the direction the blood travels?
The tail points in the direction of travel.
What type of degree is needed to be a blood spatter analyst?
Bachelors in forensic science.
What was the animal that was eating Lindy’s baby?
A dingo.
What are the four blood types?
A, B, AB, O
What are the three primary categories of bloodstains?
Passive/Gravity, Spatter, and Altered.
What is the equation to find the impact angle?
sin(x) = width/length
What is the salary of a blood spatter analyst?
70k per year.
What was Julie Rea’s consequence before the murderer came forward?
She was sent to prison.
How much blood has to be lost to lose consciousness?
1.5L
Diluted, containing insects, drained, and clotted are examples of what kind of bloodstain?
Altered
How do investigators determine who the blood belongs to?
Examine the genetic blood markers present like DNA, protein and enzyme markers, and blood group markers.
What is a type of calculation that analysts can use?
Computer models
Protractor
Mathematical calculations
Where was the blood spatter evidence for the Jose Larin Garcia case?
Jacket, shoes, car, hands.
What percent of weight does blood account for in a human body?
8%
What are the four things crime scene investigators look for?
Shape, size and distribution, the target surface texture, and the quantity of spatter.
What is the first step when entering a crime scene with blood?
Document the evidence.
Is the angle of impact important for blood analysis?
Yes.
What car was used in the Jose Larin Garcia case?
A Toyota Carolla.
What does blood transport?
Oxygen, carbon dioxide, food, and hormones.
What do passive bloodstains include?
Flow, drop(s), transfer, and large volume stains.
What can be used to uncover hidden blood?
Liminol.
What characteristics are used to explore blood patterns?
Size, shape, distribution, appearance
Low/medium/high velocity
Impact
What is a technique used for reconstructing evidence?
Type of crime
Where it came from
Victim or person who committed it
Scene factors