Hair and Fibers

Did this hair fall out naturally, or was it forcibly removed?

• Fell out naturally

• Was forcibly removed

Natural fibers come from:

• animals.

• plants.

• minerals that are mined from the ground.

• All of these choices.

The following medulla pattern is called

• fragmented 

• continuous

• interrupted

The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil in our example)

• Cuticle

• Medulla

• Cortex

The tough outer covering of a hair composed of overlapping scales. (outer part of pencil in our example)

• Cortex

• Cuticle

• Medulla

What kind of hair is this?

• Human

• Animal

Which of the following statements is not true about fiber evidence?

• To determine what it is you can burn it

• Looking under a microscope you can tell natural from synthetic

• Different weave patterns exist because different fabric has different purposes

• Fibers are considered individual evidence

What is hair made of?

• Fibers

• Keratin

• Polymers

Hair is produced from a structure called the hair _______

Tags

NGSS.MS-LS1-5

True or False: Humans develop hair follicles during fetal development, and no new follicles are produced after birth.

• True

• False