Crime Scene
Blood Types
Blood Spatter
Tests
Terminology
100
The first question you would ask yourself upon entering a crime scene with traces of blood?
Is it really blood?
100
These cells contain hemoglobin used for carrying oxygen. (scientific name needed)
What is erythrocytes
100
This is a condition affecting the shape of a blood droplet
What is size, height, velocity, angle of impact
100
This test determines the difference between human and animal blood
What is the precipitin test
100
This pattern is created when blood is released or thrown from a moving blood-bearing object
What is a cast-off pattern
200
This is the first question you would ask when determining the evidence is indeed blood.
What is "Is it human or animal?"
200
80% of people have their blood type in other bodily fluids. What are these people called?
What is secretors
200
On clean plastic, a blood droplet will have what kind of outside edge?
What is smooth outside edge, free of spines
200
This test is used to determine if a substance really is blood and gives a deep pink color
What is the Kastle-Meyer Test
200
This spatter occurs when blood is released from the body under high pressure from a breached artery
What is an arterial spurt
300
If the blood spatter on the wall of the crime scene consists of small round circles of blood, the blood dropped from approximately what angle?
What is 90 degrees
300
This blood type is the universal receiver.
What is Type AB
300
At about 30 degrees this type of blood drop shape begins to appear.
What is an elliptical shape
300
This test reacts with the heme group in blood to form a blue-green color
What is the Hematest Tablet
300
This occurs when blood travels in the same direction as the source of energy or force that caused the spatter
What is forward spatter
400
Name two of the five things that blood spatter analysis at a crime scene may tell you.
What is type of weapon, number of blows, position of victim and assailant whether death was immediate or not, activity at scene
400
This blood type is the universal donor.
What is Type O
400
If a tail is pointing towards the east, this means the blood drop was traveling in what direction?
What is the east
400
This test reacts with blood to produce light
What is the luminol test
400
Small droplets of blood distributed around a drop or pool of blood as a result of the blood hitting the target surface.
What is satellite spatter
500
This is the third question that must be asked when finding blood at a crime scene.
What is "Whose is it?"
500
55% of your blood is this.
What is plasma
500
Finding the point of convergence requires this task when dealing with multiple blood drops.
What is drawing lines through the blood drops to find a connection.
500
Name another way to tell the difference between human and animal blood.
What is microscopic work
500
An absence of stains in an otherwise continuous bloodstain pattern
What is a void
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