Hair and Fiber

What stage of hair growth is this hair in?

• Anagen phase

• Catagen phase

• Telogen Phase

• Can not be determined

What is Loccard's Exchange Principle?

• Perpetrators always leave evidence behind.

• Every contact leaves a trace.

• All touches leave evidence.

• Long, violent confrontations leave evidence.

What does a damaged hair root tell investigators?

• The hair was forcefully removed.

• The suspect was attacked.

• There was a struggle.

• The hair fell out of the person's head.

What are the three layers of hair?

• Medulla, keratin, cortex

• Cuticle, medulla, keratin

• Keratin, cuticle, cortex

• Medulla, Cortex, and Cuticle

Fiber does NOT fall into what type of evidence?

• Individual

• Class

• Trace

• Circumstantial

A natural pigment found in skin

• Melanin

• Cortical Fusi

• Telogen Phase

• Cortex

Irregularly shaped air spaces in the cortex

• Keratin

• Cortical Fusi

• Medulla

• Catagen Phase

Material that connects an individual or thing to a certain group.

• Class Evidence

• Individual Evidence

• Circumstantial Evidence

Tags

NGSS.HS-LS4-1

The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil)

• Cuticle

• Medulla

• Cortex

The tough outer covering of a hair composed of overlapping scales. (outer part of pencil)

• Cortex

• Cuticle

• Medulla