Cox Chapter 11 Cosmetology

1. The study of hair is known as .

• a. histology

• b. trichology

• c. bacteriology

• d. dermatology

2. A mature strand of human hair is divided into two principal parts known as the .

• a. follicle and cuticle

• b. hair root and follicle

• c. hair shaft and follicle

• d. hair root and hair shaft

3. What structure in the skin or scalp encases a hair root?

• a. Hair follicle

• b. Hair bulb

• c. Dermal papilla

• d. Arrector pili

4. What is the lowest part of the hair strand?

• a. hair follicle

• b. hair bulb

• c. dermal papilla

• d. arrector pili

5. What structure is described as a small, cone-shaped elevation located at the bottom of the hair follicle?

• a. lower follicle

• b. hair bulb

• c. dermal papilla

• d. arrector pili

6. What small involuntary muscle is attached to the underside of a hair follicle?

• a. arrector pili

• b. hair bulb

• c. dermal papilla

• d. hair strand

Oil glands of the skin, connected to the hair follicles, are known as .

• a. sudoriferous glands

• b. endocrine glands

• c. lymph glands

• d. sebaceous glands

8. Of the 20 amino acids that make up hair, a person must obtain of the essential amino acids from daily diet.

• seven

• nine

• c. eleven

• d. thirteen

9. The three main layers of the hair shaft are the .

• a. outer, inner, and central

• b. cuticle, cortex, and medulla

• c. cuticle, inner root, and medulla

• d. cortex, medulla, and dermis

10. What substance in the cortex gives natural color to the hair?

• Protein

• Melanin

• Sebum

• Tissue