TEST—CHAPTER 11—PROPERTIES OF THE HAIR AND SCALP

The study of hair is known as:

• histology

• trichology

• bacteriology

• dermatology

The body can produce ________ of the 20 amino acids that make up hair and your diet must include the remaining essential amino acids.

• 7

• 9

• 11

• 13

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

• follicle and cuticle

• hair root and follicle

• hair shaft and follicle

• hair root and hair shaft

A tube-like depression, or pocket, in the skin or scalp that encases the hair root is called the:

• follicle

• bulb

• dermal papilla

• arrector pili

A thickened, club-shaped structure that forms the lower part of the hair root is called the:

• follicle

• bulb

• dermal papilla

• arrector pili

A small, cone-shaped elevation located at the bottom of the hair follicle is called the:

• lower follicle

• bulb

• dermal papilla

• arrector pili

A small involuntary muscle attached to the underside of a hair follicle is the:

• arrector pili

• bulb

• dermal papilla

• arrector pili

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

• sudoriferous glands

• endocrine glands

• lymph glands

• sebaceous glands

Hair is composed of cells arranged in three layers which are:

• outer, inner, central

• cuticle, cortex, medulla

• cuticle, inner root, medulla

• cortex, medulla, dermis

Long, coarse, pigmented hair found on the scalp, legs, arms, and body is known as:

• vellus hair

• lanugo hair

• terminal hair

• stationary hair