1. Medulla pattern Medullary Index Width of hair Scale pattern
Human vs. Animal Hair
Medulla pattern
Medullary Index
Width of hair
Scale pattern

2. Human Hairs

4. Medullary Index—Human vs. Animal

5. Horse Hair

6. Dog Hair

7. Mouse Hair

8. Deer Hair

9. Cow Hair
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10. Pig Hair

11. Scale Patterns Human vs. Animal

19. Variation of Human Hair
From one hair to another on the same persons head
From one area of the body to another
Medulla pattern
Color
Cut vs. Yanked vs. Naturally fallen out

20. Fallen Out Hairs

21. Pulled Out-By the Root

22. Natural Tip

23. Broken-Torn

24. Cut Hair

25. Medulla Patterns in Humans
Can vary from one hair to another on the same person
Also varies from person to person.
Continuous
Interrupted
Fragmented

28. Body hairs look different than hairs from a person’s head
For example, Beard hair sometimes has a double medulla