Hair

How would you describe this cuticle?

• Absent

• light brown

• thin and dark

• continuous

How would you describe this cuticle?

• Absent

• Can't tell difference between the cuticle and cortex

• thick and dark

• continuous

The central core of the hair is called the...?

• Medulla

• Cuticle

• Cortex

• Shaft

In order to determine if a hair is from an animal or human, one should divide the diameter of the...

• medulla by the entire hair

• medulla by the cortex

• cortex by the medulla

• cortex by the entire hair

Hair is helpful in solving old crimes because…

• hair on a suspect never changes

• hair always contains DNA evidence

• hair takes little room to store in evidence closets

• hair does not easily decompose

The tough clear outside covering of a hair shaft is

• cuticle

• cortex

• medulla

• polymer

The middle layer of a hair shaft that contains pigment

• the cortex

• the medulla

• the cuticle

• the polymer

What type of evidence is hair without the follicular tag considered?

• Individual

• Class

Type of cuticle

• coronal

• spinous

• imbricate

• solid

Diameter of the medulla is 0.2 and diameter of the hair is 0.4.  What is the medullary index?

• 2.5

• 0.5

• 0.1

• cannot be determined