Forensic Hair Analysis Quiz

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

• Medulla
• Cuticle
• Cortex
• Shaft

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

Hair always contains DNA

• true
• false

Tags

NGSS.MS-LS3-1

Type of cuticle

• coronal
• spinous
• imbricate
• solid

What cuticle type is in the picture?

• Coronal

• Imbricate

• Spinous

How can you tell the difference between animal and human hair?

• Human is imbricate and animal is always spinous.

• Human medullary index is less than animal.

• Human hair is thinner than animal hair

• Animal hair has a thicker cortex than human.

If a hair were a pencil, which structure corresponds to the paint on the surface?

• Follicle
• Cortex
• Cuticle
• Medulla

If a hair were a pencil, which structure corresponds to the wood?

• Follicle
• Cortex
• Cuticle
• Medulla