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Cards In This Set
| Front | Back |
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The scientific study of the hair, its diseases, and its care is called
-dermatology
-biology
-trichology
-hairology
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Trichology
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The two main divisions of the hair are the hair root and the:
-hair shaft
-dermal papilla
-bulb
-follicle
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Hair shaft
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The three main structures associated with the hair root are the follicle, the bulb and the:
-cuticle
-medulla
-hair stream
-dermal papilla
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Dermal papilla
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The club-shaped structure that forms the lower part of the hair root is the:
-hair shaft
-dermal papilla
-arrector pili
-hair bulb
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Hair bulb
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The blood and nerve supply that provides nutrients needed for hair growth are contained in the
-arrector pili
-dermal papilla
-sebaceous glands
-hair shaft
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Dermal papilla
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The tiny involuntary muscle in the skin that contracts and causes goose bumps is the
-orbicularis oculi
-dermal papilla
-medulla
-arrector pili
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Arrector pili
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The three layers of the hair shaft are the cuticle, cortex and:
-follicle
-bulb
-root
-medulla
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Medulla
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Generally, only thick, coarse hair contains a:
-dermal papilla
-cortex
-cuticle
-medulla
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Medulla
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About 90 percent of the total weight of hair comes from the
-cuticle
-medulla
-follicle
-cortex
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Cortex
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Liquids can penetrate the hair only when the __ is raised.
-root
-medulla
-cuticle
-cortex
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Cuticle
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The changes that take place in the hair during permanent waving, chemical relaxing and oxidation haircoloring occur in the :
-medulla
-roots
-cuticle
-cortex
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Cortex
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As living cells of the hair mature, they fill up with a protein called
-sebum
-keratin
-melanin
-lanugo
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Keratin
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The elements taht make up the amino acids in hair are carbon, nitrogen, hydrogen:
-sulfur and chlorine
-copper and oxygen
-oxygen and sulfur
-oxygen and sodium
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Oxygen and sulfur
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The strongest side bonds in the cortex are the:
-hydrogen bonds
-peptide bonds
-salt bonds
-disulfide bonds
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Disulfide bonds
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Disulfide bonds can be broken by:
-shampoo
-heat
-perms and relaxers
-water
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Perms and relaxers
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