Chapter 12: Hair and Fiber Review

Front

What is the function of the focus knob on a microscope?

Back

The focus knob is used to adjust the clarity of the image being viewed under the microscope.

Front

What does a damaged hair root indicate in forensic investigations?

Back

A damaged hair root indicates that the hair was forcefully removed.

Front

What type of characteristics does a hair root with DNA provide?

Back

Individual characteristics, which can be used to identify a specific person.

Front

What are the different types of medulla patterns in hair?

Back

Types of medulla patterns include absent, uniserial, continuous, and fragmented.

Front

What is the anagen phase of hair growth?

Back

The anagen phase is the active growth phase where hair follicles are producing new hair.

Front

What is the catagen phase of hair growth?

Back

The catagen phase is a transitional phase where hair growth slows down and the hair follicle shrinks.

Front

What is the telogen phase of hair growth?

Back

The telogen phase is the final phase of hair growth that results in hair loss and lasts about three months.

Front

What is the significance of the medulla in hair analysis?

Back

The medulla can provide information about the species of the hair and its origin.

Front

What are class characteristics in hair analysis?

Back

Class characteristics are features that can be used to narrow down a group of possible sources, such as color and diameter.

Front

What are individual characteristics in hair analysis?

Back

Individual characteristics are unique features that can identify a specific hair, such as DNA from the root.