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Keratinization is the process by which newly formed cells in the hair bulb mature, fill with ______, move upward, lose their nucleus, and die.
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Protein
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A _________________ diet helps maintain healthy hair.
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Healthy balanced diet
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Tiny grains of pigment in the cortex that give natural color to the hair.
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Melanin
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The number of individual hair strands found on one square inch of scalp.
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Density
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Oil glands of the skin connected to hair follicles.
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Sebaceous glands
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Amount of 'movement' in the hair strand; described as straight, wavy, curly, and extremely curly.
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Wave pattern
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Pheomelanin provides this natural hair color.
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Red
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Knotted hair characterized by brittleness and the formation of nodular swelling along the hair shaft.
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Trichorrhexis nodosa
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Boil; acute, localized bacterial infection of the hair follicle.
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Furuncle
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Highly contagious disease caused by mites that burrow under the skin.
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Scabies
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A weak, temporary side bond between adjacent polypeptide chains.
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Salt bond
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Hair contains ______% carbon.
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51%
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Lowest part of a hair strand; the thickened, club-shaped structure that forms the lower part of the hair root.
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Hair bulb
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The sudden falling out of hair in round patches or balness in spots; may occur on the scalp and elsewhere.
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Alopecia areata
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The diameter of the individual hair strands.
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Texture
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