Trichology

Question 1

What is the study of Hair?

Answer 1

Trichology

Question 2

3 purposes of hair

Answer 2

-adornment
-protection
-sensory perception

Question 3

what are the 3 sections of a hair strand?
(extra point for order)

Answer 3

-Medulla (middle)
-cortex (second)
-cuticle (outside)

Question 4

what are the 3 different types of hair and there descriptions?

Answer 4

-Lanugo; fine, silky, baby hair shed shortly after birth
-Vellus; thin, short, non-pigmented
-Terminal; long, thick, pigmented hair, usually on scalp, eyebrows etc

Question 5

name the 3 stages of hair growth and describe

Answer 5

-Anagen; active growing stage
-Catagen; brief transition period when all cell division stops
-Telogen; hair dies

Question 6

name 2 conditions that affect hair growth

Answer 6

-Hirsutism; terminal hair found of women where it usually grows for men (beard)
-Hypertrichosis; abnormal coverage on hair where usually lanugo hairs appear

Question 7

what are the factors that affect hair growth?

Answer 7

Congenital, Hormonal or Topical, Medical disorders and Medication

Question 8

what are melanocytes?

Answer 8

cells that exist among the dividing cells within the hair follicle

Question 9

describe the natural colouring process for hair

Answer 9

Melanin is produced by melanocytes which rest near the hair bulb’s nourishment centre, the dermal papilla, and form bundles of a pigment protein called Melanosomes. Genes determine the amount to use for pigment.

Question 10

what are the 2 melanins for hair colour?

Answer 10

Eumelanin- brown/ black
Pheomelanin- red/yellow

Question 11

why does hair grow grey when ageing?

Answer 11

your hair naturally grows grey in the cortex, with melanin making the hair a different colour, as we grow old our body no longer produces melanin for our hair so it grows out its natural colour