1. Skin, BMI, % Body Fat

2. Integumentary System

4. Dermal papilla
Reticular layer

5. Fingerprint Principles
According to criminal investigators, fingerprints follow 3 fundamental principles:
A fingerprint is unique.
Pattern will remain unchanged for the life.
General characteristic ridge patterns allow them to be systematically identified.

6. Fingerprint Classes Arches Loops Whorls
There are 3 specific classes for all fingerprints based upon their visual pattern:
Arches
Loops
Whorls

7. Fingerprint Classes
Whorl
Arch
Loop

8. Interesting Info Fingerprint Factoid: 60% of people have loops
35% have whorls,
5% have arches
Did you know?
Dactyloscopy is the study of fingerprint identification. Police investigators are experts in collecting “dactylograms”, otherwise known as fingerprints.

9. Arches
Arches are the simplest type of fingerprints that are formed by ridges that enter on one side of the print and exit on the other. No deltas are present.
Tented Arches
Similar to the plain arch,
but has a spike in the center.
Spike or “tent”
Plain Arch
Ridges enter on one side and
exit on the other side.

10. Loops
Loops must have one delta and one or more ridges that enter and leave on the same side. These patterns are named for their positions related to the radius and ulna bones.
Radial Loop (Right Thumb)
Loop opens toward the left or the radial bone.
Ulnar Loop (Right Thumb)
Loop opens toward right or the ulna bone.
Delta
NOTE: On the left hand, a loop that opens to the left would be an ulnar loop, while one that opens to the right would be a radial loop.

11. Whorls
Whorls have at least one ridge that makes (or tends to make) a complete circuit. They also have at least two deltas. If a print has more than two deltas, it is most likely an accidental.
Central Pocket Whorl
Plain Whorl
Draw a line between the two deltas in the plain and central pocket whorls. If some of the curved ridges touch the line, it is a plain whorl. If none of the center core touches the line, it is a central pocket whorl.

12. Whorls – Part 2 Double Loop Whorl
Double loop whorls are made up of any two loops combined into one print.
Delta
Accidental Whorl
Accidental whorls contain two or more patterns (not including the plain arch), or does not clearly fall under any of the other categories.

13. Identify each fingerprint pattern.B A E C D

14. Directions

15. It’s time to make some prints!
Avoid Partial Prints
GOOD PRINT Get as much of the top part of your finger as possible!

16. Sweat Which area will sweat more, forearm or palm? Form a hypothesis.
iodine
Iodine reacts to starch, which is in sweat.

17. Sweat Attach bond paper to skin with tape. 1 cm2 Bond paper and tape
Go run for 5 minutes and look at paper.

18. Sweat

19. BMI

21. International BMI Categories
Category
BMI range – kg/m2
Starvation
less than 14.9
Underweight
from 15 to 18.4
Normal
from 18.5 to 22.9
Overweight
from 23 to 27.5
Obese
from 27.6 to 40
Morbidly Obese
greater than 40

23. Skin fold

24. Skin fold

25. Chest
Abdomen
Thigh

26. chest

27. abdomen

28. thigh

30. 1. Iliac
2. Triceps
3. Thigh

32. triceps

34. % body fat analysis