Across
- 3. The average human replaces their head hair in a cycle of this many years
- 6. Number of hairs collected from a suspect’s head for comparison
- 8. A medulla pattern that consists of an unbroken line of color
- 9. Tips of hair that can give clues to treatments or last hair cut
- 12. When hair is forcibly removed, this is often attached at the base
- 14. The middle layer of the hair shaft that provides strength and contains granules of color pigment
- 17. When hair is moved from the source, to one item, to another item
- 20. This technique can identify up to 14 different elements in a single two-centimeter-long strand of human hair
- 21. Hairs cut with this tool have a long tail on one side of the cut
- 22. Type of triangular, protruding scales; commonly found in the fur hairs of mink, seals, and cats
- 24. Hairs that have had this treatment have a yellowish tint and are brittle
- 25. Term used when it has been determined that hairs do not have a common origin
- 27. Stage of active hair growth; Approx. 85% of all human hair is in this stage
- 28. In order to test hair for drugs and other chemicals, what first needs to be done to it?
- 29. A medulla pattern that consists of a pigmented line broken at regular intervals
- 33. Without follicle cells attached, it is not possible to show with any certainty that two hairs came from the same person or animal, therefore hair is considered this kind of evidence
- 34. This method is used to collect hair evidence when there are many hairs in a large area
- 36. A type of microscope that magnifies a specimen 50,000 times or more; provides incredible detail of the surface or interior of evidence
- 37. A network of blood vessels that supply nutrients to hair and help it grow
- 38. Final stage of the hair cycle in which hairs fall out; about 12% of all hairs are in this stage which lasts a few months
- 39. Type of scales that resemble a stack of paper cups; commonly found in the fur hairs of small rodents and bats
Down
- 1. A type of microscope equipped with filters to detect shined light, indicating the presence of a dye or other treatment
- 2. Spongy core of a hair fiber that gives it flexibility
- 4. The tough, clear, outer covering of hair composed of overlapping scales
- 5. Protein that makes hair strong and flexible
- 7. The main purpose of hair is to regulate body temperature by doing this
- 10. If the medullary index is 0.5 or greater, the hair came from this source
- 11. A medulla pattern that consists of a pigmented line that is both broken and unevenly spaced
- 12. In many mammals, hair can be very dense, and it is then referred to as this
- 13. A microscope that allows the side-by-side view of different hair samples
- 15. Muscles in skin that cause hair to stand upright
- 16. Irregularly shaped air spaces in the cortex of hair
- 18. Transitional stage where hair growth slows; accounts for about 2% of all hair growth and development
- 19. Hairs cut with this tool have broken and partially cut shafts
- 23. Gland in skin to secrete oil
- 26. Pigment granules which give color to blonde and red hair
- 30. This method is used to collect hair evidence when there are many hairs in a small area
- 31. The actively growing root or base of a hair
- 32. Pigment granules which give color to brown and black hair
- 35. Region of hair composed of the cuticle, cortex and medulla