Hair Evidence
The three parts of the hair shaft are known as the...
What are the cuticle, cortex, and medulla?
This main type of fiber tends to have smooth and consistent characteristics. All fibers of this source tend to look the same.
What are synthetic fibers?
This physical force is the reason why blood drops have a domed shape.
What is cohesion?
Passive blood drops from someone who is injured and walking.
What is a trail of circular blood drops?
Mitochondrial DNA is inherited from which member of the family?
What is Mother?
At this age, humans have the highest number of hair follicles they will ever have.
What is newborn?
What are natural fibers?
What are spines?
Blood exiting under pressure from an artery and striking a surface; peaks indicate heart contraction.
What is arterial gush?
This is known as blood that is traveling in the opposite direction of the force applied.
What is back Spatter?
This substance primarily determines hair color.
What is melanin?
This type of microscope is used to look at dyes in animal hair fibers.
What is a fluorescent microscope?
A blood drop makes this shape when it hits a surface at 30 degrees
What is elliptical?
Wet, bloody surface contacts a second surface, leaving an impression.
What is a transfer?
A transfer between one person, an intermediate object, and onto another person is known as what type of transfer.
What is a secondary transfer?
These types of substances can be seen when chemically testing hair.
What are food, drinks, toxins, and drugs?
This type of natural fiber comes from minerals in the earth, and was once used in a lot of household items. It has been known to cause cancer if inhaled.
What is asbestos?
This is known as blood that is traveling in the same direction as the force applied.
What is forward blood spatter?
Area where an object was placed before blood spatter, and removed afterwards leaving an empty outline.
What is a void?
This calculation is used to find the angle of impact of a blood stain.
Mitochondrial DNA can be extracted from these three types of samples.
What are hair, bone, and teeth?
These three factors affect the potential for fiber transfer.
This is specifically used for looking at the 2 dimensional location in which blood spatter marks originated from (area of origin). We can use this information to find the 3 dimensional origin of blood impact.
What is area of convergence?
Seen on walls or ceilings; blood flung off weapon; pattern of lines with blood direction changing as arm moves up and down.
What is a cast off?
Pool of blood being absorbed into a material. Usually mattresses, furniture, or bedding. This is know as...
What is a saturation pattern?