Blood Basics
Is It Blood?/Is It Human Blood?
Blood Spatter Terms
Blood Spatter Analysis
Random!
100
Is your blood type considered individual or class evidence?
What is class evidence.
100
If blood is present, a dark pink color will be produced. Name this test.
What is Kastle-Meyer test
100
Name three things investigators can learn from blood spatter evidence.
What is type and velocity of weapon number of blows handedness of assailant (right/left) position and movements of the victim and assailant during and after the attack which wounds were inflicted first type of injuries how long ago the crime was committed whether death was immediate or delayed
100
How fast do the edges of a bloodstain "skeletonize".
What is 50 seconds.
100
Today, blood spatter evidence can be used to explain: a. most scenes b. a violent scene c. all scenes d. all of the above
What is d. all of the above
200
Only A and B proteins are found on the surface of RBC. What is their blood type?
What is AB-
200
When is a luminol test done?
What is to look for cleaned up bloodstains.
200
Name the three types of impact spatter.
What is low, medium, and high
200
Smooth surface texture will result in LESS or MORE spatter (glass or tile)
What is LESS
200
What does a Kastle-Meyer Test tell an investigator?
What is if blood is present, a dark pink color will be produced.
300
What is the role of a red blood cell (RBC)?
What is has hemoglobin to carry oxygen
300
How might human blood differ from animal blood?
What is human blood will differ in appearance and percentages of blood cells when compared to animal blood
300
The pointed edges of a stain that radiate out from the spatter; can help determine the direction from which the blood traveled are called.......
What is spines
300
If the bloodstain is altered or disturbed after 50 seconds, the outside perimeter will still show. TRUE or FALSE.
What is TRUE
300
What percentage of people are Rh positive? a. 85 % b. 65 % c. 55 % d. 12 %
What is 85 %
400
What is the role of a white blood cell (WBC)?
What is destroy invaders in the blood, secrete antibodies to help fight invaders
400
Use the precipitin test to determine is....
What is... it is human or animal blood.
400
Pattern made when blood is exiting the body under pressure from a breached artery is called....
What is arterial spurting.
400
As the height increases, what will happen to the dropped blood? (Name 3)
What is drop diameter increases amount of spines increases amount of satellites increases satellite distance from parent drop increases
400
Passive blood stains are created from the force of ......
What is gravity
500
The positive and negative blood refers to another surface protein called.....
What is the Rh factor.
500
If a person is type O-, what proteins are found on the surface of their red blood cells?
What is NONE!
500
Pattern made when blood is released or thrown from a blood-bearing object in motion
What is cast-off.
500
Shows distance of source from projected blood drops.
What is area of convergence
500
Tangent of angle of impact x distance from blood to area of convergence=
What is height of wound
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