Chapter 16 Flashcards
First hair growth stage where new hair is produced
Anagen
Located in base of hair follicle; when it contracts, the hair stands straight up, causing goosebumps
Arrector Pili Muscle
Ingrown hairs (from shaving)
Barbae folliculitis
Second regression (falling out) stage; in the catagen stage, the hair shaft grows upward and detaches itself from the bulb
Catagen
Substance, usually a caustic alkali preparation, used for the temporary removal of superfluous hair by dissolving at the skin level
Depilatory
Cone-shaped elevation at the base of the follicle that fits into the bulb. The papilla is filled with tissue that contains the blood vessels and cells necessary for hair growth and nourishment of follicle.
Dermal Papilla
Removal of hair by means of an electric current that destroys the root of the hair
Electrolysis
Hair removal treatments such ad waxing, electrolysis, or laser hair removal
Epilation
The swelling at the base of the follicle that provides the hair with nourishment; it is thick, club-shaped structure that forms the lower part of the hair root
Hair bulb
The tubular shield that surrounds the lower part of the hair shaft; the pore where hairs grow
Hair follicle
Part of the hair that lies within the follicle
Hair root
Portion of the hair that extends or projects beyond the skin, consisting of the outer layer (cuticle), inner layer (medulla), and middle layer (cortex). Color changes happen in the cortex.
Hair shaft
Growth of an unusual amount of hair on parts of the body normally bearing only downy hair, such as the face, arms, and legs of women or backs of men
Hirsutism
Excessive hair growth where hair does not normally grow
Hypertrichosis
The hair on a fetus; is extremely soft
Lanugo
Final hair growth stage, the resting stage. During the telogen stage, the hair is at its full size and is erect in the follicle
Telogen
The scientific study of hair and its diseases
Trichology
Very fine, soft hair
Vellus hair
