Hair Review

Multiple Choice

The main purpose of hair is to:

• Protect against sunlight
• Decrease friction
• Aid in sensory
• Regulate body temperature

Multiple Choice

When evidence can only be associated with a group and never with a single source, that evidence is said to possess:

• Class categories
• Class characteristics
• Group categories
• Group characteristics

Multiple Choice

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

Multiple Choice

The most important structure for the individualization of hair (identity).

• Medulla
• Cuticle
• Cortex
• Follicle

Multiple Choice

Using the pencil analogy, which structure corresponds to the wood?

• Follicle
• Cortex
• Cuticle
• Medulla

Multiple Choice

In which layer would pigment granules be found?

• A

• B

• C

Multiple Choice

Which part of the hair is shown below?

• medulla

• cuticle

• cortex

• follicle

Multiple Choice

In the diagram the cortex would be indicated by the letter

• A

• B

• C

Multiple Choice

Which ancestry?

• European

• African

• Asian

Match

Match the following Medulla Patterns

absent medulla

continuous medulla

fragmental medulla

• absent medulla

• continuous medulla

• fragmental medulla

Multiple Choice

We know hair is from a human if…

• The medullary index is 0.5 or greater           
• The medullary index is 0.33 or less
• The cuticle is coronal
• The medulla is fragmented

Multiple Choice

A young child is kidnapped from her school playground. Shown below is a reference sample of the kidnapped child's hair. The only cars that left the parking lot before the child was discovered to be missing were those of four cafeteria workers. The car of each worker was searched below. Which recovered hair, if any, is consistent with that of the victim and warrants further investigation?

• Worker A

• Worker B

• Worker C

• Worker D