click below
click below
Normal Size Small Size show me how
Hairs and Fibers
Question | Answer |
---|---|
Trace Evidence | Any very small physical material that can be transferred from person-person, or between a person and a crime scene. |
Cortex | The largest portion of the shaft giving you your natural hair color. |
Cuticle | The layer of cells that cover the surface of the shaft and look like scales on a fish or even roofing tiles. |
Medulla | Cells that run down the center of the cortex like a canal. |
Mineral Fiber | Think Earth, glass, asbestos. |
Animal Fiber | Silk, wool, fur. |
Vegetable Fibers | Cotton, linen, hemp. |
Synthetic Fibers | Rayon, nylon, acetate. |
The 4 Tests used to identify fibers | Burn test, solvent/solubility test, stain test, microscopic test. |
The 2 collection methods: | The Tape method, and the sweeping/vacuuming method. |
Looking for fibers: besides clothing, | Rugs, drapes, couches, pillows, etc. |
The scales of a cuticle: | Coronal: crownlike, Spinous:petalike, triangular shape, Imbricate: flattened, what humans have. |
The study of hair is: | Trichology |
The hair that provides the most features for comparison: | Scalp Hair |