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20 Cards in this Set
- Front
- Back
Keratinization |
Process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die. |
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Peptide Bond |
Also known as an end bond; chemical bond that joins amino acids to each other, end-to-end, to form a polypeptide chain. |
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Malassezia |
Naturally occurring fungus that is present on all human skin, but is responsible for dandruff when it grows out of control. |
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Keratin |
A fibrous protein that grows from cells originating within the hair follicle. |
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Pediculosis Capitis |
Infestation of the hair and scalp with head lice. |
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Pheomelanin |
The lighter pigment that provides natural colors ranging from red and ginger to yellow and blond tones. |
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Whorl |
Hair that forms in a circular pattern on the crown of the head. |
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Trichology |
Scientific study of hair and its diseases and care. |
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Pityriasis Capitis Simplex |
Technical term for classic dandruff; characterized by scalp irritation, large flakes, and itchy scalp. |
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Proteins |
Long, coiled complex polypeptides made of amino acids. |
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Sebaceous glands |
The oil glands in the skin that are connected to the hair follicles. |
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Side Bonds |
Bonds that cross-link the polypeptide chains together and are responsible for the extreme strength and elasticity of human hair. |
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Tinea |
Technical term for ringworm- a contagious condition caused by fungal infection and not a parasite; characterized by itching, scales, and, sometimes, painful lesions. |
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Trichoptilosis |
Technical term for split ends. |
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Wave Pattern |
The shape of the hair strands; described as straight, wavy, curly, and extremely curly. |
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Telogen |
Also known as resting phase; the final phase in the hair cycle that lasts until the fully grown hair is shed. |
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Medulla |
Innermost layer of the hair that is composed of round cells; often absent in fine and naturally blond hair. |
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Melanin |
The tiny grains of pigment in the cortex that give natural color to the hair. |
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Salt Bond |
A weak, physical, cross-link side bond between adjacent polypeptide chains. |
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Tinea Favosa |
Also known as Tinea Favus; fungal infection characterized by dry, sulfur- yellow, cuplike crusts on the scalp called scutula.
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