Hair and Fiber Review

Which of the following is in the correct order starting from the outside of a hair and moving toward the middle?

• cortex—medulla—cuticle

• medulla—cuticle—cortex

• cuticle—cortex—medulla

• medulla—cortex—cuticle

The medullary index of animal hair is:

• Less than ⅓ the width of the hair

• More than ⅓ the width of the hair

• Equal to the width of the hair

Which of the following are NOT fibers made of animal proteins?

• Wool

• Silk

• Cashmere

• Bamboo

Which stage of hair development does the hair ACTIVELY grow in?

• Catagen

• Telogen

• Metagen

• Anagen

Hair grows from the skin out of specialized structures called _________.

• Follicle

• Glands

• Pores

• Papillae

What fiber does this sample most likely belong to?

• Polyester

• Wool

• Nylon

• Cotton

The following hair was collected from a crime scene. Based on the appearance of the root, it most likely:

• Fell out on its own

• Came from a person from European descent

• Was in the telogen stage of growth when it came off the head

• Was pulled violently from the head

Which hair layer is transparent and is scale-like in appearance?

• Cortex

• Medulla

• Cuticle

This hair layer contains the pigment (melanin) that gives hair its color:

• Cortex

• Medulla

• Cuticle

Which type of animal hair insulates the animal from extreme temperatures?

• Whiskers

• Undercoat

• Guard hairs

• Mane