ch 11

The study of hair is know as

• cosmetology

• dermatology

• trichology

• hairology

A mature strand of human hair is divided into two principle parts

• hair root and hair shaft

• hair follicle and hair root

• hair follicle and hair cuticle

• hair shaft and hair cortex

What structure of the skin or scalp encases a hair root?

• hair bulb

• hair follicle

• dermal papilla

• arrector pili

What is the lowest part of the hair strand?

• hair bulb

• hair follicle

• dermal papilla

• arrector pili

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

• hair bulb

• hair follicle

• dermal papilla

• arrector pili

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

• hair bulb

• hair follicle

• dermal papilla

• arrector pili

Located above the epidermis

• hair bulb

• hair follicle

• dermal papilla

• hair shaft

Located below the epidermis

• hair root

• hair shaft

oil glands of the skin, connected to the hair follicles, are know as

• sudoriferous glands

• endocrine glands

• lymph glands

• sebaceous glands

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

• 7

• 9

• 13

• 11