Forensics Hair and fibers

Front

What is the significance of hair in forensic investigations?

Back

Hair does not easily decompose, making it useful for solving old crimes.

Front

What are melanin granules?

Back

Bits of pigment found in the cortex of a hair.

Front

Where is Nuclear DNA found in a hair?

Back

In the root or follicle.

Front

How do you determine the medullary index?

Back

Measure the diameter of the medulla and divide it by the diameter of the hair.

Front

What is the name for man-made fibers?

Back

Synthetic fibers.

Front

What is the structure of a hair fiber?

Back

A hair fiber consists of the cuticle, cortex, and medulla.

Front

What is the cuticle of a hair?

Back

The tough outer covering of a hair composed of overlapping scales.

Front

What is the cortex of a hair?

Back

The middle layer of hair that contains melanin granules and provides strength.

Front

What is the medulla in hair?

Back

The central core of a hair fiber that can vary in thickness and structure.

Front

What is the difference between natural and synthetic fibers?

Back

Natural fibers are derived from plants or animals, while synthetic fibers are man-made.