Flashcards in 11. Hair And Scalp Deck (69)
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1
Tricholigy
THe scientific study of hair, it's disease and care
2
Mature strand
Two parts are the hairs roots and hair shaft of human hair
3
Hair follicle
The tube like depression or pocket in the skin or scalp that contains the hair root
4
Hair follicles
Are not found in the soles of the feet
5
Arrector pili muscle
The small involuntary muscle in the base of the hair follicle
6
Sebum
The darth or oily substance secreted by the sebaceous glands
7
Healthy cuticle
For chemicals to penetrate the hair layer must have the alkaline pit
8
Medulla
Composed of round cells
9
Anlagen phase
New hair is produced Becuase new cells are actively manufactured in the hair follicle
10
Anagen phase
New hair is produced because new cells are actively manufactured in the hair follicle
11
Major elements
That make up human hair are carbon oxygen hydrogen nitrogen and sulfur
12
Peptide bonds
The strong chemical bonds that Join amino acids
13
Pheomelanin
Provides natural colors ranging from red and finger to yellow and blond tones
14
Asians
Tend to have extremely straight hair
15
Minimize tangles
Use a detangling rinse when shampooing extremely curly hair
16
Hair texture
Classified as course medium or fine
17
Hair density
The measurement of the number of individual hair strands on kne square inch of the scalp
18
Chemical services
Performed on hair with low proprietary required more alanine solutions
19
Wet hair
With normal elasticity will stretch up to 50% of its original length and return to that length with out breaking
20
Normalizing shampoo
Can treat oily hair and scalp by properly washing
21
Vellus
Type of hair that almost never has a medulla
22
Cartagena phase
The follicle canal shrink and detach from the dermal papilla
23
Healthy scalp
The average growth is 1/2" per mo
24
Canities
Grey hair
25
Hypertrichosis
A condition of abnormal growth of terminal hair in areas of the body that normally grow only Vellus hair
26
Pityriasis
Dandruff
27
Dermal papilla
One of the main structures of the hair root that contains the blood and nerve supply that provides the nutrients needed for hair growth
28
Salt bonds
Account for about 1/3 of the hairs overall strength
29
Anlagen phase
Generally lasts from 3 to 5 years
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