Hair & Fiber Analysis Test

What part of the hair contains most of the pigment granules?

• Cuticle

• Cortex

• Medulla

• Root

What scale pattern is most commonly seen in human hair?

• Coronal

• Spinous

• Imbricate

• Random

The medullary index of human hair is typically:

• More than 2/3

• Between 1/2 and 3/4

• Less than 1/3

• Equal to the cortex diameter

What type of lighting technique is used in a comparison microscope?

• Fluorescent

• Bright field

• Infrared

• Ultraviolet

Which fiber type shows a ribbon-like twisted structure under a microscope?

• Wool

• Nylon

• Cotton

• Polyester

A continuous is more common in animal hair than human hair.

(a)  

16. Describe two ways to distinguish between human and animal hair under a microscope.

• Human hair has a medulla that is continuous, while animal hair has a fragmented medulla.

• Human hair has a fragmented medulla, while animal hair has a continuous medulla.

• Human hair has a thicker cuticle compared to animal hair.

• Animal hair has a thicker cuticle compared to human hair.

17. What does root banding in hair indicate?

• A sign of hair damage

• A natural hair growth pattern

• The use of hair dye

• A genetic hair condition

18. Why is the medullary index important in forensic hair analysis?

• It helps determine the species origin of the hair.

• It measures the length of the hair.

• It identifies the color of the hair.

• It determines the age of the individual.

19. What does a cross-sectional shape of a hair help determine?

• The color of the hair

• The texture of the hair

• The length of the hair

• The growth rate of the hair