Milady's Standard Cosmetology, Chapter 9: Properties of the hair and scalp.
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78 terms
Portuguese | English |
|---|---|
 Trichology | The scientific study of the hair, it's diseases, and its care? |
| Hair Root | The part of the hair located below the surface of the scalp? |
| Hair Shaft | The portion of the hair that projects above the skin? |
| Follicle | The tube like depression or pocket in the skin or scalp that contain the hair root? |
| Hair Bulb | The lowest area or part of the hair strand? |
| Dermal Papilla | Small, cone-shaped area located at the base of the hair follicle that fits into the hair bulb? |
| Dermal Papilla | Contains the blood and nerve supply that provides the nutrients needed for hair growth? |
| Arrector Pili | A tiny involuntary muscle in the base of the hair follicle, causes goose bumps? |
| Sebaceous Glands | The oil glands of the skin, connected to the hair follicles, secrete an oily substance called Sebum? |
| Cuticle | The outermost layer of hair? |
| Cortex | The middle layer of the hair? |
| Medulla | The innermost layer and is composed of round cells? |
| Keratin | A fibrous protein called? |
| Alopecia | Abnormal hair loss? |
| Alopecia Areata | The sudden falling out of hair in round patches or baldness in spots? |
| Amino Acids | Units that are joined together end to end by peptide bonds to form the polypeptide chains that comprise proteins? |
| Anagen | Growth phase in the hair cycle in which a new hair shaft is created? |
| Androgenic Alopecia | Hair loss characterized by miniaturization of terminal hair which is converted to vellus hair; in men, it is known as male pattern baldness? |
| Canities | Technical term for gray hair? |
| Carbuncle | Inflammation of the subcutaneous tissue caused by staphylococci? |
| Catagen | The brief transition period between the growth and resting phases of a hair follicle? |
| COHNS Elements | The five elements that make up human hair, skin, tissue and nails (carbon, oxygen, hydrogen, nitrogen, and sulfur)? |
| Cowlick | Tuft of hair that stands straight up? |
| Disulfide Bond | Strong chemical side bonds that join the sulfur atoms of two neighboring cysteine amino acids to create cystine? |
| Eumelanin | Melanin that gives brown and black color to hair? |
| Fragilitas Crinium | Technical term for brittle hair? |
| Furuncle | Boil; acute, localized bacterial infection of the hair follicle? |
| Hair Density | The number of individual hair strands found on 1 square inch of scalp? |
| Hair Elasticity | Ability of the hair to stretch and return to it's original length without breaking? |
| Hair Porosity | Ability of the hair to absorb moisture? |
| Hair Stream | Hair flowing in the same direction, resulting from follicles sloping in the same direction? |
| Hair Texture | Thickness or diameter of the individual hair strands? |
| Helix | Spiral shape created by polypeptide chains that intertwine around each other? |
| Hydrogen Bond | Weak physical side bond that is easily broken by water or heat? |
| Hypertrichosis | Condition of abnormal growth of hair, characterized by the growth of terminal hair in areas of the body that normally grow only vellus hair? |
| Integument | Largest and fastest growing organ of the body; composed of the hair, skin, and nails? |
| Keratinization | Process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die? |
| Malassezia | Naturally occurring fungus that is present on all human skin, and is responsible for dandruff? |
| Melanin | Tiny grains of pigment in the cortex that give natural color to the hair? |
| Monilethrix | Technical term for beaded hair? |
| Pediculosis Capitis | Infestation of the hair and scalp with lice? |
| Peptide Bond | Chemical bond that joins amino acids to each other, end to end, to form a polypeptide chain, also referred to as end bond? |
| Pheomelanin | Melanin that provides natural hair colors from red and ginger to yellow/blond tones? |
| Pityriasis | Dandruff; an inflammation of the skin characterized by the formation and flaking of fine, thin scales? |
| Pityriasis Capitis Simplex | Technical term for classic dandruff; characterized by scalp irritation, large flakes, and itchy scalp? |
| Pityriasis Steatoides | Scalp inflammation marked by fatty (greasy or waxy) types of dandruff? |
| Polypeptide Chain | Long chain of amino acids linked by peptide bonds? |
| Postpartum Alopecia | Temporary hair loss experienced at the conclusion of a pregnancy? |
| Ringed Hair | Variety of canities characterized by alternating bands of gray and pigmented hair throughout the length of the hair strand? |
| Salt Bond | A weak, temporary side bond between adjacent polypeptide chains? |
| Scabies | Highly contagious disease caused by mites that burrow under the skin? |
| Scutula | Dry sulfur-yellow, cup-like crusts on the scalp in tinea favosa or favus? |
| Seborrheic Dermatitis | Medical term for pityriasis steatoids accompanied by redness and inflammation? |
| Sebum | Oily secretion of the sebaceous glands, which lubricates the hair and skin? |
| Telogen | Resting phase; the final phase in the hair cycle that lasts until the fully grown hair is shed? |
| Terminal Hair | Long hair found on the scalp, as well as on legs, arms, and body of both males and females? |
| Tinea | Medical term for ringworm, a contagious condition caused by fungal infection? |
| Tinea Capitis | Fungal infection of the scalp characterized by red papules, or spots at the opening of hair follicles? |
| Tinea Favosa | Fungal infection characterized by dry, sulfur-yellow, cup-like crusts on the scalp, called scutula? |
| Trichoptilosis | Technical term for split ends? |
| Trichorrhexis Nodosa | Knotted hair characterized by brittleness and the formation of nodular swellings along the hair shaft? |
| Vellus | Short, fine, unpigmented downy hair that appears on the body, with the exception of the palms of the hands and soles of the feet? |
| Wave Pattern | Amount of "movement" in the hair strand; described as straight, wavy, curly, and extremely curly? |
| Whorl | Hair that forms in a circular pattern, as on the crown? |
| Minoxidil | A tropical medication that is applied to the scalp twice a day, and has been proven to stimulate hair growth? |
| Finasteride | An oral prescription medication for hair loss, for men only? |
| Inactive Sebaceous Glands | Dry hair and scalp can be caused by? |
| Overactive Sebaceous Glands | Oily hair and scalp is caused by improper shampooing or? |
| Vellus and Terminal | The two main types of hair found on the body are? |
| Breaks Easily | Hair with low elasticity is brittle and? |
| Overly porous | Hair with high porosity is considered? |
| Normal | Hair with average porosity is considered to be? |
| Resistant | Hair with low porosity is considered? |
| Coarse | Hair texture that has the largest diameter? |
| Medium | The most common hair texture? |
| Fine | Hair texture that has the smallest diameter and is more fragile? |
| Elasticity | The four most important factors to consider in hair analysis are texture, porosity, density, and? |
| Extremely Curly Hair | Cross-sections that are highly oval and vary in shape and thickness along their length? |
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