Chapter 7 Properties of the Hair & Scalp

The Scientific study of hair, its diseases, and care is called __________.

• dermatology

• trichology

• biology

• cosmetology

The two parts of a mature strand of human hair are the ______________.

• dermis and epidermis

• hair shaft and hair follicle

• hair root and hair shaft

• hair root and hair follicle

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

• hair follicle

• hair shaft

• hair bulb

• scalp

Hair follicles are not found on the ___________.

• forehead area

• backs of the hands

• soles of the feet

• back of the neck

During the _____________ phase, new hair is produced because new cells are actively manufactured in the hair follicle.

• anagen

• catagen

• resting

• telogen

The medulla is composed of ___________ cells.

• rod-shaped

• round

• spiral shaped

• rectangular

The major elements that makeup human hair are carbon, oxygen, hydrogen, ______________.

• lead, and zinc

• keratin, and selenium

• boron, and calcium

• nitrogen, and sulfur

The strong, chemical bonds that join amino acids are called ______________.

• convex bonds

• peptide bonds

• hydrogen bonds

• side bonds

Which type of melanin provides natural colors ranging from red and ginger to yellow and blond tones?

• pheomelanin

• eumelanin

• polymelanin

• biomelanin

To help minimize tangles in extremely curly hair when shampooing, you should use _______________.

• a drying shampoo

• strong scalp manipulations

• a detangling rinse

• antibacterial shampoo