1. Hair

2. 2. Hair Structure Function
Hair Follicle (follies = bag) (Pouch of epidermal cells)
Support structure for hair (Nerve ending and Sebaceous Glands attach to it 1 2 3 4

3. Area of cell reproduction
Structure
Function
Hair Bulb
Area of cell reproduction 1 2 3 4

4. Hair Shaft (Area of keratinized cells above the epidermis)
Structure
Function
Hair Shaft (Area of keratinized cells above the epidermis)
-warmth -protection -sensory -prevents water loss 1 2 3 4

5. Hair Root (Papilla) (connective tissue) -holds hair in place
Structure
Function
Hair Root (Papilla) (connective tissue)
-holds hair in place 1 2 3 4

6. Structure
Function
Melanocytes
-determine hair color 1

7. Structure
Function
Arrector pili muscle
-contraction results in short hairs standing on end (goose bumps)

8. How is hair microscopically analyzed?
Hair is composed of three principal parts:
Cuticle - outer coating composed of overlapping scales
Humans have overlapping external scales
Focus in and out to see scales

9. Medulla - central core
Described as: continuous, fragmented, or absent

10. Cortex - protein-rich structure surrounding the medulla; contains pigment
Described by color
Described by pigment patterns

11. Hair Shape

12. Hair Tips
Broken Glass
Rounded- not cut
Burned
Cut

13. I shared a presentation called Hair Analysis
Make sure you are entering information under the correct group
Group ?
Name
Name
To see details
Adjust the light
Focus in and out
Crop your final picture
Cuticle
Cortex
Medulla
Cuticle
Cortex
Medulla