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Hair & ScalpChapter9
Cosmetology Properties of Hair & Scalp Chapter 9
| Question | Answer |
|---|---|
| Small, cone-shaped area located at the base of the hair follicle. | Dermal Papilla |
| Involuntary muscle in the base of the hair follicle. | Arrector pili |
| Oil glands of the skin. | Sebaceous |
| Oily Substance that lubricates the hair and skin. | Sebum |
| The middle layer of the hair. | Cortex |
| Acids that are linked together end to end. | Amino |
| Chemical bond that links amino acids together. | Peptide |
| A weak physical side bond easily broken. | Hydrogen |
| Pigment in the cortex,gives natural color to hair. | Melanin |
| Hair flowing in the same direction. | Stream |
| Tuft of hair that stands straight up. | Cowlick |
| short, fine, downy hair. | Vellus |
| Long hair found on scalp, legs, arms, and bodies. | Terminal |
| Resting phase of hair cycle. | Telogen |
| Abnormal hair growth. | Hypertrichosis |
| Technical term for split ends | Trichoptilosis |
| Technical term for beaded hair. | Monilethrix |
| The study of hair is known as. | Trichology |
| Ability of the hair to absorb moisture. | Porosity |
| Thickness or diameter of the individual hair strand. | Texture |
| A weak, temporary side bond. | Salt bond |
| Strong chemical side bonds that join sulfur atoms. | Disulfide bond |
| Outermost layer of the hair. | Cuticle |
| The number of individual hair strands found on 1 square inch of scalp. | Hair density |
| Abnormal hair loss. | Alopecia |
| Melanin that provides natural hair colors from red and ginger to yellow/blonde tones. | Pheomelanin |
| Melanin that gives brown and black color to hair. | Eumelanin |
| Growth phase in the hair cycle in which a new hair shaft is created. | Anagen |
| The brief transition period between the growth and resting phases of the hair follicle. | Catagen |
| Innermost layer of the hair, composed of round cells;often absent in fine hair. | Medulla |
| Infestation of the hair and scalp with head lice. | Pediculosis Capitis |
| Hair that forms a cicular pattern. | whorl |