Properties of Hair Chapter 11 Table Review

Properties of Hair Question The Greek words trichos means “hair.” The body produces the 20 amino acids that make up hair. The sebaceous glands contain the blood and nerve supply that provides the nutrients needed for hair growth. The hair cuticle consists of an overlapping layer of transparent, scale-like cells that look like shingles on a roof. Hair is approximately 60 percent protein. A peptide bond is reformed by drying or cooling. Eumelanin provides natural colors ranging from red and ginger to yellow and blond tones. Vellus hair is not pigmented and almost never has a medulla. The complete loss of all body hair is known as alopecia totalis. You should not perform a service on a client who has seborrheic dermatitis. The hair, skin, nails, and glands are known collectively as the: The five main structures of the hair root include all of the following except the: The pocket or tube-like depression in the scalp or skin that contains the hair root is the: The thickened, club-like structure that forms the lower part of the hair root is the: A small, cone-shaped area located at the base of the hair follicle that fits into the hair bulb is the: Which layer of the hair shaft creates the shine and the smooth, silky feel of healthy hair? A lengthwise section of hair shows that cuticle scales overlap and each individual cuticle scale is attached to the: The fibrous protein core formed by elongated cells that contains melanin pigment is the: The medulla, the innermost layer of the hair, is composed of cells that are: Hair is composed of protein that grows from cells originating within the: The hair shaft that emerges from the scalp is a nonliving fiber composed of: The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as the: The units of structure that build protein and are joined together end to end like pop beads are: A long chain of amino acids linked by peptide bonds is called a: The three different types of side bonds are: A physical side bond that is easily broken by water and heat is a: A weak, physical, cross-link side bond between adjacent polypeptide chains that is broken by changes in pH is a: Permanent waving and hair relaxers change the shape of hair by chemically altering the hair’s: Hydroxide chemical relaxers break disulfide bonds and convert them to: All natural hair color is the result of pigment located in the cortex called: The melanin that provides brown or black color to hair is: Which of the following terms is used to describe hair’s wave pattern? a. curly c. extremely curly b. straight d. All answers are correct. Vellus hair is the is short, fine, and downy hair also known as: The three growth cycles of human hair are: The resting phase or final phase of the hair cycle that lasts until the fully grown hair is shed is the: The sudden falling out of hair in round patches or baldness in spots is: The technical term for gray hair is: The condition of abnormal hair growth of terminal hair is referred to as: Trichoptilosis is the technical term for: Answer True False False True False False False True False True integument epidermis follicle Hair Bulb dermal papilla cuticle Cortex Cortex Round Hair Follicle keratinized protein COHNS elements amino acids polypeptide chain hydrogen, salt, and disulfide hydrogen bond salt bond disulfide bonds lanthionine bonds melanin eumelanin All answers are correct. lanugo hair anagen, catagen, and telogen telogen phase alopecia areata canities hypertrichosis split ends A condition that is characterized by brittleness and the formation of nodular swellings along the hair shaft is: Dry hair and scalp should be treated with products that contain moisturizers and: Refers to the shape of the hair strand Long, coiled, complex polypeptides made of amino acids The technical term for brittle hair Temporary hair loss experienced at the end of a pregnancy The outermost layer of hair trichorrhexis nodosa emollients Wave pattern Proteins Fragilitas crinium Postpartum alopecia Cuticle