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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 |