Morphological Characteristics of Hair

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

• Medulla
• Cuticle
• Cortex
• Shaft

The hair follicle is dormant and hairs are easily lost during which stage of the hair life cycle?

• Anagen
• Telogen
• Catagen
• Metagen

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

Hair always contains DNA

• true
• false

Tags

NGSS.HS-LS3-1

Type of cuticle

• coronal
• spinous
• imbricate
• solid

Human or nonhuman hair?

• human 
• nonhuman