The Properties of the Hair and scalp

The scientific study of hair and its diseases and care is called:

• physiology

• cosmetology

• dermatology

• trichology

The two parts of a mature strand of human hair are:

• hair root and hair shaft

• hair follicle and hair shaft

• hair bulb and hair length

• hair root and hair cuticle

The portion of the hair that projects above the skin is the:

• hair root

• hair shaft

• hair bulb

• hair follicle

The _____ is the tube-like depression in the skin or scalp that contains the hair root.

• hair bulb

• dermal papilla

• hair shaft

• hair follicle

Hair follicles are distributed all over the body, with the exception of the:

• soles of feet and forearms

• face and palms of hands

• palms of hands and soles of feet

• palms of hands and elbows

The thickened, club-shaped structure that forms the lower part of the hair root is the hair bulb

• true

• false

The small, cone-shaped area at the base of the hair follicle that fits into the hair bulb is the dermal papilla

• True

• False

The _____ glands secrete sebum.

• sudoriferous​

• duodenal

• sebaceous

• parotid

Which layer of hair consists of transparent, scale-like cells?

• hair root

• hair cuticle

• medulla

• cortex

Which layer of hair provides a barrier that protects the inner structure of hair?

• hair root

• cortex

• hair cuticle

• medulla