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| The sudden falling out of hair in round patches or baldness in spots ; may occur on the scalp and elsewhere on the body. |
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| Untis that are joined together end to end by peptide bonds to form the polypeptide chains that comprise proteins . |
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| Growth phase in the hair cycle in which a new hair shaft is created . |
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| Hair loss characterized by miniaturiziation of terminal hair which is converted to vellus hair ; in men , it is known as male pattern baldness . |
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| Minute , involuntary muscle in the base of the hair follicle that causes " goose bumps " |
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| Techanical term for gray hair; results from the loss of the hairs natural melanin pigment . |
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| Inflammation of the subcutaneous tissue caused by staphylocicci ; similar to furnucle but larger |
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| The brief transition period between the growth and resting phase of a hair follicle . |
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| The 5 elements that make up human hair, skin , tissue and nails . ( Carbon , oxygen , hydrogen , nitrogen , and sulfur ) |
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| Middle layer of the hair ; a fibrous protein core formed by elongated cells containing melanin pigment |
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| Tuft of hair that stands straight up |
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| Outermost layer of hair , consisting of a single , overlapping layer of transparent , scale - like cells |
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| Small , cone - shaped elevation located at the base of the hair follicle that fits into the hair bulb |
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| Strong chemical side bonds that join the sulfur atoms of 2 neighboring cyteine amino acids to create cystine , which joins together two polypeptide strands like rungs on a ladder . |
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| Melanin that gives brown and black color to hair |
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| Tube - like depression or pocket in the skin or scalp that contains the hair root . |
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| Technical term for brittle hair |
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| Boil ; acute , localized bacterial infection of the hair follicle |
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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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| The number of individual hair strands found on 1 square inch of scalp. |
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| Ability of the hair to stretch and return to its original length without breaking . |
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| ability of the hair to absorb moisture |
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| the part of the hair contained within the follicle, below the surface of the scalp. |
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| The portion of that projects beyond the skin. |
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| Hair flowing in the same direction , resulting from follicles sloping in the same direction |
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| Thickness or diameter of the individual hair strands. |
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| Spiral shape created by polypeptide chains that intertwine around each other |
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| Weak physical side bond that is easily broken by water or heat |
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| Condition of abnormal growth of hair , characterized by the growth of terminal hair in areas of the body that normally grow only vellus hair |
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| Largest and fastest growing organ of the body ; composed of the hair , skin ,and nails |
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| Process by which newly formed cells in the hair bulb mature , fill with keratin, move upward ,lose their nucleous , and die |
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| Naturally occuring fungus that is present on all human skin , and is responsible for dandruff |
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| Innermost layer of the hair ,composed of round cells ; often absent in fine hair . |
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| Tiny grains of pigment in the cortex that give natural color to the hair . |
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| Technical term for beaded hair |
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| Infestation of the hair and scalp with head lice |
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| Chemical bond that joins amino acides to each other , end to end , to form a polypeptide chain. |
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| Melanin that provides natural hair colors from red and ginger to yellow/blond tones . |
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| Dandruff ; an inflammation of the skin charactrized by the formation flaking of fine , thin scales |
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| Pityriasis Capitis Simplex |
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| Technical term for classic dandruff; characterized by scalp irritatin , large flakes , and itchy scalp |
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| Scalp inflammation marked by fatty ( greasy or waxy) types of dandruff |
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| Long chain of amino acids linked by peptide bonds |
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| temporary hair loss experienced at the conclusion of a pregnancy |
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| variety of canities characterized by alternating bands of gray and pigmented hair throughout the length of the hair strand. |
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| A weak , temporary side bond between adjacent polypeptide chains |
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| Highly contagious disease caused by mites that burrow under the skin |
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| Dry , sulfur - yellow , cup - like crusts on the scalp in tinea favosa or favus |
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| oil glands of the skin connected to hair follicles |
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| Medical term for pityriasis steatoides accompanied by redness and inflammation |
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| Oily secretion of the sebaceous glands , which lubricates the hair and skin |
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| Resting phase; the final phase in the hair cycle that lasts until the fully grown hair is shed |
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| Long hair found on the scalp , as well as on legs , arms , and body of both males and females . |
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| Medical term for ringworm , a contagious condition caused by fungal infection |
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| Science dealing withn the study of hair , its diseases , and care |
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| Technical term for split ends |
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| Knotted hair characterized by brittleness and the formation of nodular swellings along the hair shaft |
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| SHort , fine , unpigmented downy hair that appears on the body ; with the exception of the palms and then soles of the feet. |
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| Hair that forms in circular pattern , as on the crown . |
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