Properties of the Hair and Scalp
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is Trichology? | The study of hair and it's diseases and care
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| What are 2 main parts that full grown human hair is divided into? | Hair Root & Hair Shaft
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| Arrector Pili | A tiny, involuntary muscle in the base of the hair follicle. Responsible for goosebumps.
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| A small, cone-shaped elevation located at the bottom of the hair follicle. | Dermal Papilla
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| A tube-like depression/pocket in the skin/scalp containing hair root. | Follicle
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| Lowest area or part of hair strand. Club-shaped structure that forms in the lower part of the hair root. | Hair Bulb
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| Oil glands are also known as ____________ ____________ and are connected to hair follicles. | Sebaceous Glands
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| The cells that make up hair are divided into 3 layers: | Cuticle- Outtermost
Cortex- Middle Layer- contains melanin
Medulla- Innermost layer
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| What are the 3 phases that all hair follicles cycle through? | Anagen- Growth Phase
Catagen- Brief Transistion Period
Telogen- Resting Phase
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| Hair that forms in a circular patter, as on the crown | Whorl
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| Ability of hair to absorb moisture | Porosity
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| Elasticity | Ability of the hair to stretch and return to its original length without breaking
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| Texture | Refers to the degree of coarseness or fineness of the hair
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| The sudden loss of hair in round or irregular patches without inflammation is called what? | Alopecia Areata
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| What is Trichorrehexis Nodosa | "Knotted Hair"
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| Element in Normal Hair: a)Nitrogen b)Hydrogen c)Oxygen d)Carbon | a)17%
b)6%
c)21%
d)51%
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| A side bond that is easily broken by strong alkaline or acidic solutions is called a ____________ bond | disulfide
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| Amount of movement in hair strand. Referred to as straight, wavy, curly or extra curly | Wave Pattern
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| Vellus Hair | short, fine, unpigmented, downy hair on the body
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| Technical term for gray hair | canities
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| Technical term for split ends | Trichoptlosis
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| "Beaded Hair" is known as | Monilethrix
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| Fungal infection of scalp- Red papules or spots at opening of hair follicles | Tinea Capitis
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| Technical term for Lice | Pediculosis Capitis
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| What is the part of the hair located below the surface of the scalp called? | Hair root
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| What is the portion of the hair that projects above the skin called? | Hair Shaft
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| What are the six main structures of the hair? | Hair follicle, Arrector Pili, Sebaceous gland, Dermal Papilla, Hair bulb and Hair root
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| Layer of the hair that consists of transparent scale like cells that resemble the shingles on a roof | Cuticle
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| What layer of hair only exists in coarser hair textures? | Medulla
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| What are proteins made of? | Amino Acids
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| What type of bonds link amino acids together? | Peptide bonds
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| What are three types of side bonds? | Salt, Hydrogen and Disulfide
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| What type of melanin provides black and brown color to the hair? | Eumelanin
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| What type of melanin provides red and ginger to yellow and blonde tones to the hair? | Pheomelanin
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| What side bond is weakest? | Hydrogen
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| What side bond is strongest? | Disulfide
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