Forensic Hair

The protein that makes up hair is called _____

• ninhydrin
• pigments 
• medulla
• keratin

The smallest unit of textile material that has a length many times greater than its diameter is..

• keratin 
• cuticles
• fibres

• chromatography

The deepest layer of hair (compared to the lead of a pencil) is the ___

• medulla
• cortex
• cuticle
• keratin 

The middle layer of a hair (compared to the wood of a pencil) is the __

• medulla
• cortex
• cuticle
• keratin

The outside layer of a hair (compared to the ink on a pencil) is the ___

• medulla
• cortex
• cuticle
• keratin

Which is NOT a characteristic of the medulla that varies and therefore should be observed?

• scales
• opacity 
• thickness
• continuity 

Which of the following is NOT one of the characteristics of the cuticle that varies and should be observed?

• scales
•  continuity 
• pigment
• thickness

Which layer of hair is the most important component when determining which individual human the hair came from?

• medulla
• cortex
• cuticle

The name for man-made fibres is:

• processed fibres

• synthetic fibres

• natural fibres

• modified fibres

Which of the following is NOT one of the hair shapes in cross-section?

• square
• round
• oval
• crescent moon