Forensics Hair Quiz

What is the cuticle?

• outside layer (usually bottom and top of outer layer)

•  inner (second) layer (top and bottom  part of inner layer)

•  innermost layer, center of hair (the middle of that inner layer)

What does the cuticle tell us?

• It tells us about the strength, elasticity, and color of the hair. This layer contains keratin and melanin, which contribute to these properties.

• It tells us about the hair's protection and how it interacts with the environment. It acts as a shield, protecting the inner layers from damage.

• It tells us about the structure and thickness of the hair. Not all hair types have it, and its presence may indicate the hair's coarseness.

What is the Cortex?

• innermost layer, center of hair (the middle of the inner layer)

  
  

• outside layer (usually bottom and top of outer layer), 

  
  

• inner (second) layer (top and bottom part of inner layer)

What does the Cortex tell us?

• It tells us about the strength, elasticity, and color of the hair. This layer contains keratin and melanin, which contribute to these properties.

• It tells us about the hair's protection and how it interacts with the environment. It acts as a shield, protecting the inner layers from damage.

• • It tells us about the structure and thickness of the hair. Not all hair types have it, and its presence may indicate the hair's coarseness.

What is the medulla?

• outside layer (usually bottom and top of outer layer)

• innermost layer, center of hair (the middle of that inner layer)

  
  

•  inner (second) layer (top and bottom part of the inner layer) 

  
  

What does the medulla tell us?

• • It tells us about the hair's protection and how it interacts with the environment. It acts as a shield, protecting the inner layers from damage.

• It tells us about the strength, elasticity, and color of the hair. This layer contains keratin and melanin, which contribute to these properties.

• It tells us about the structure and thickness of the hair. Not all hair types have it, and its presence may indicate the hair's coarseness.

What is the significance of blood supply?

• Hair growth depends on oxygen and nutrients delivered through the bloodstream.

• The follicle is linked to our blood supply, so whatever is taken into our body is distributed to our hair

  
  

• The blood supply provides energy for the cells in the follicle to function.

• 1. The bloodstream affects hair pigmentation and strength.

How long is the Anagen stage and what happens during it?

• 3-5 years, hair growth.

• 3 weeks, intermediate stage (hair stops growing).

• 3 months, loss of hair.

How long is the Catagen stage and what happens during it?

• 3-5 years, hair growth.

• 3 weeks, intermediate stage (hair stops growing).

• 3 months, loss of hair.

How long is the Telogen stage and what happens during it?

• 3-5 years, hair growth.

• intermediate stage (hair stops growing).

• 3 months, loss of hair.