Hair + Fibers

The shiny nature of silk is due to
 

• its hollow core
• its smooth, round fibers
• mucus secretions from the silkworm
• its ability to reflect light

Tags

NGSS.MS-PS4-2

Most of the color from a strand of hair comes from

• the follicle
• the medulla
• the cuticle
• the cortex

Tags

NGSS.MS-LS1-2

The type of cuticle scale shown on this hair is known as

• coronal
• imbricate
• dentate
• scaley

Cortex is at the core of the hair shaft

• True

• False

The hair cuticle is on the inside of the hair shaft

• True

• False

The main functions of hair:

• Regulate body temperature

• Protect against harm

• Social interactions

• All of the above

All of these methods of analyzing fibers without damaging it, except...

• Polarizing light microscopy

• Infrared microscopy

• Burn test

• None of the above

What is the source of this hair?

• Human

• Animal

What cuticle type is in the picture?

• Coronal

• Imbricate

• Spinous

Label the part of the microscope. What is part A?

• eyepiece lens

• eyepiece tube

• turret

• objective lens