Hair follicle structure
![Picture](/uploads/6/6/1/3/6613863/7464018.jpg?385)
Before analyzing hair we should know the structure of hair.
Difference between animal and human hair.
![Picture](/uploads/6/6/1/3/6613863/242230.gif?501)
Basically human hair has non-medulary pattern and animal hair has medulary pattern.
The 3 parts of hair has to be observed.
Hair tip.
![Picture](/uploads/6/6/1/3/6613863/9353496.jpg)
Under 45X and total magnification 450X.
Hair Shaft.
![Picture](/uploads/6/6/1/3/6613863/6543286.gif)
Under 45X and total magnification 450X.
Hair root.
![Picture](/uploads/6/6/1/3/6613863/438506.jpg)
Under 45X and total magnification 450X.
Root are classified into 3 categories.
![Picture](/uploads/6/6/1/3/6613863/4001405.jpg?452)
- Anagen.
- Catagen.
- Telogen.