Properties of the Hair and Scalp (Cosmetology)

The study of the hair is known as ______

• histology

• trichology

• bacteriology

• dermatology

A mature strand of human hair is divided into two principle parts known as the _________

• follicle and cuticle

• hair root and follicle

• hair shaft and follicle

• hair root and hair shaft

What structure in the skin or scalp incases the hair root?

• Hair follicle

• Hair bulb

• dermal papilla

• Arrector pili

What is the lowest part of the hair strand?

• hair follicle

• hair bulb

• dermal papilla

• arrector pili

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

• lower follicle

• hair bulb

• dermal papilla

• arrector pili

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

• arrector pili

• hair bulb

• dermal papilla

• hair strand

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

• sudoriferous glands

• endocrine glands

• lymph glands

• sebaceous glands

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

• seven

• nine

• eleven

• thirteen

The three main layers of the hair shaft are the _________

• outer, inner and central

• cuticle, cortex and medulla

• cuticle, inner root, and medulla

• cortex, medulla and dermis

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

• Protein

• Melanin

• Sebum

• Tissue