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Forensics Hair

What is trace evidence? Any very small physical material that can be transferred from person to person or between a person and a crime scene.
What are some examples of trace evidence? Hair, fibers, glass, paint, dirt, and plant material.
Why would you use hair for evidence at a crime scene? You can figure out if hair is from humans or if it is from animals, hair is small, easily shed, clingy, goes unoticed, is hardy, and survives for a long period of time, and hair contains many toxins like arsenic and you can extract DNA from the follicle.
What is cortex? The largest portion of the shaft giving you the hair color that you have.
What is cuticle? The layer of cells that cover the surface of the shaft and looks like scales on a fish or even roofing tiles. Scales overlap and always point up the shaft, away from the bulb.
What is medulla? Cells that run down the center of the vortex like a canal.
What is caronal? Scale of a cuticle, crownlike, and rodents have them.
What is spinous? Scale of a cuticle, pedallike, and cats have them.
What is imbricate? Scale of a cuticle, flattened, and humans along with other animals have them.
What is the medullary index of humans and animals? Humans are 0.3 and animals are greater then 0.5.
Created by: Frankie Prainito