Hair and Fibers

The name for man-made fibers is:

• processed fibers
• synthetic fibers
• natural fibers
• modified fibers

Tags

NGSS.MS-PS1-3

What is the medullary index for a human hair?

• generally less than 1/3
• generally equal to 1/3
• generally more than 1/3
• generally greater than 1/2

Fibers are classified as either:

• natural fibers or synthetic fibers.
• polymers or synthetic fibers.
• acrylic fibers or plant fibers.
• olefins or synthetic fibers

Tags

NGSS.MS-PS1-3

Natural fibers come from:

• animals.
• plants.
• minerals that are mined from the ground.
• All of these choices.

What are the three layers of hair?

• Medulla, keratin, cortex

• Cuticle, medulla, keratin

• Keratin, cuticle, cortex

• Medulla, Cortex, and Cuticle

What cuticle type is in the picture?

• Coronal

• Imbricate

• Spinous

Small but measurable amounts of physical or biological material found at a crime scene.

• Class Evidence

• Individual Evidence

• Trace Evidence

A fiber made from a man-made substance such as plastic.

• Natural Fiber

• Synthetic Fiber

• Monomer

Tags

NGSS.MS-PS1-3

The protein that makes up hair is called _____

• ninhydrin
• pigments 
• medulla
• keratin

The following medullary pattern is called

• fragmented 
• continuous
• interrupted/intermittent
• There is no medulla present - absent