Which of the following is NOT a phase of the hair growth cycle?

• Anagen

• Catagen

• Telogen

• Melogen

What is the purpose of identifying and defining common hair disorders?

• To understand hair health

• To improve hair color

• To enhance hair styling

• To increase hair length

What is the outermost part of the hair called?

• Hair root

• Hair shaft

• Hair follicle

• Hair bulb

What is the role of the hair root?

• To protect the scalp

• To anchor the hair within the follicle

• To provide color to the hair

• To extend the hair above the skin

What is the description of the hair shaft?

• Portion of hair extending above skin surface

• Portion of hair enclosed within follicle beneath skin surface

• The base of the hair

• The root of the hair

Which structure is not part of the hair root?

• Follicle

• Hair bulb

• Dermal papilla

• Hair shaft

What is the primary function of the arrector pili?

• Contains hair root

• Fits into hair bulb

• Attaches to base of hair follicle

• Provides nutrients to hair

The medulla is found in which part of the hair shaft?

• Outermost layer

• Middle layer

• Innermost layer

• Surface layer

The cuticle layer of the hair shaft is composed of what type of cells?

• Round cells

• Flat, overlapping cells

• Square cells

• Irregular cells

What is the outermost layer of the skin called?

• Dermis

• Epidermis

• Cortex

• Medulla