Passed)
Trichology - Answers The technical term for the study of hair.
Medulla - Answers Central core of the hair shaft (often absent in fine or very fine hair)
Cortex - Answers Inside the second layer of the hair fiber; gives hair most of its pigments and strength
(elasticity).
Cuticle - Answers Outer covering of the hair shaft; the loose and pilible skin around the nail.
Anagen - Answers Active or growing stage of hair, during which each hair bulb has an attached root
sheath.
Telogen - Answers Resting stage of hair growth when each bulb has no attached root shaft, at which
time hair falls out; eventually, cell division is again stimulated, producing new hair, and thr growth cycle
starts again.
Catagen - Answers Brief transitional stage of hair growth when all cell division stops.
Eumelanin - Answers Type of melanin that produces brown/black hair color.
Pheomelanin - Answers Type of melanin that produces red hair color.
Melanocytes - Answers Cells that exist among the dividing cells within the hair bulb.
Melanosomes - Answers Bundles of melanocytes that rest near the hair bulb's nourishment center, the
dermal papilla.
Trichoptilosis - Answers Fragilitis crinium or brittle hair; technical name for split ends.
Fragilitis Cranium - Answers Technical term for split ends, small cracks in the cuticle of the hair that
deepen into the cortex.
Pilica polonica - Answers Excessive matting of the hair, characterized by a mass of hair strands tangles
together in a mat that cannot be seperated.
Nodules/Trichorrexis nodosa - Answers Lumps or swelling along the hair shaft.
Canities - Answers Grayness or whiteness of the hair.
Ringed hair - Answers Alternating bands of gray and dark hair.
Hypertrichosis - Answers Referred to as hirsuties or superfluous hair; the abnormal coverage of hair on
areas of the body where normallu only lanugo hair appears.
Monilethrix - Answers Beads or nodes formed on the hair shaft.