Cosmetology Properties of Hair & Scalp Chapter 9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Small, cone-shaped area located at the base of the hair follicle. | Dermal Papilla
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| Involuntary muscle in the base of the hair follicle. | Arrector pili
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| Oil glands of the skin. | Sebaceous
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| Oily Substance that lubricates the hair and skin. | Sebum
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| The middle layer of the hair. | Cortex
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| Acids that are linked together end to end. | Amino
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| Chemical bond that links amino acids together. | Peptide
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| A weak physical side bond easily broken. | Hydrogen
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| Pigment in the cortex,gives natural color to hair. | Melanin
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| Hair flowing in the same direction. | Stream
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| Tuft of hair that stands straight up. | Cowlick
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| short, fine, downy hair. | Vellus
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| Long hair found on scalp, legs, arms, and bodies. | Terminal
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| Resting phase of hair cycle. | Telogen
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| Abnormal hair growth. | Hypertrichosis
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| Technical term for split ends | Trichoptilosis
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| Technical term for beaded hair. | Monilethrix
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| The study of hair is known as. | Trichology
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| Ability of the hair to absorb moisture. | Porosity
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| Thickness or diameter of the individual hair strand. | Texture
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| A weak, temporary side bond. | Salt bond
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| Strong chemical side bonds that join sulfur atoms. | Disulfide bond
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| Outermost layer of the hair. | Cuticle
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| The number of individual hair strands found on 1 square inch of scalp. | Hair density
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| Abnormal hair loss. | Alopecia
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| Melanin that provides natural hair colors from red and ginger to yellow/blonde tones. | Pheomelanin
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| Melanin that gives brown and black color to hair. | Eumelanin
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| Growth phase in the hair cycle in which a new hair shaft is created. | Anagen
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| The brief transition period between the growth and resting phases of the hair follicle. | Catagen
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| Innermost layer of the hair, composed of round cells;often absent in fine hair. | Medulla
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| Infestation of the hair and scalp with head lice. | Pediculosis Capitis
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| Hair that forms a cicular pattern. | whorl
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