Hair Theory
Hair Growth
Hair Growth
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Random
100
Technical name for the study of hair
What is trichology
100
The three shapes of follicles
What is round, oval and elliptical
100
Transitional stage where all cell division stops.
What is catagen stage
100
Degree of coarseness or fineness in the hair fiber.
What is texture
100
Number of layers of cuticle scales on each hair strand.
What is 7-12
200
Two main purposes of hair
What is adornment and protection (from heat, cold, injury)
200
The papilla is filled with capillaries that supply nourishment to the cells around it. These cells are known as...
What is germinal matrix cells
200
Process of cells changing their shape, drying out, and forming keratin protein.
What is keratinization
200
Loss of pigment in the hair.
What is canities
200
Ability of hair to absorb moisture, liquids or chemicals.
What is porosity
300
Hair grows from a follicle or tube like pocket known as
What is root sheath
300
Three major layers that the hair consists of.
What is medulla, cortex and cuticle
300
Active growing stage, lasting 2-6 years, with 90% of a person's hair in this stage.
What is anagen stage
300
Number of active hair follicles per square inch on the scalp
What is density
300
Ability of hair to stretch and return to its original shape without breaking.
What is elasticity
400
Cluster of cells that in basal or upper layer of epidermis
What is primitive hair germ
400
Glands that produce sebum or oil.
What is sebaceous glands
400
Resting stage in which the hair falls out; 10-15% of hair is in this stage.
What is telogen stage
400
Mass of hair strands tangled together that cannot be separated.
What is pilica polonica
400
Abnormal coverage of hair on areas of the body where normally only lanugo appears.
What is hypertrichosis
500
Two primary parts of the hair
What is hair root and hair fiber
500
Causes hair to stand on end when a person is scared or cold.
What is arrector pili muscle
500
The four areas where hair NEVER grows.
What is palms, soles of feet, lips, eyelids
500
Lumps or swelling along the hair shaft.
What is trichorrhexis nodosa
500
Breaks in the hair between beads or nodes.
What is monilethrix
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