10th Grade Properties of the Hair

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

• biology

• dermatology

• trichology

• cosmetology

Hair follicles are not found on the palms of hands and soles of feet.

• True

• False

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

• dermis and epidermis

• hair root and hair shaft

• hair shaft and hair follicle

• hair root and hair follicle

The _______ is a small involuntary muscle in the base of the hair follicle.

• cuticle

• cortex

• dermal papillae

• arrector pili

The outermost layer of the hair shaft is the ____

• cuticle

• cortex

• lymph

• medulla

A tuft of hair that stands straight up is a

• cystine

• stream

• whorl

• cowlick

Shaving, clipping, and cutting the hair on the head

• makes it grow back faster

• makes it grow back darker

• makes it grow back thicker

• has no effect at all

The strong bond needed to break in order to chemically change the hairs texture and color is:

• hydrogen

• salt

• disulfide

• peptide

The major elements that make up human hair are carbon, oxygen, hydrogen and _______

• lead and zinc

• keratin and selenium

• boran and calcium

• nitrogen and sulfer

The strong chemical bonds that join amino acids are called

• convex bonds

• peptide bonds

• hydrogen bonds

• salt bonds