Questions and Answers
What is the natural flow or wave pattern of hair determined by?
Angle of the follicle
Hair color is darker during which stage of growth?
Anagen
What is the technical name for the hair of the head?
Capilli
What causes gray hair?
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What is the central core of the hair shaft sometimes missing in fine or very fine hair?
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The hair itself is nearly doubled back over the follicle in a shape resembling what?
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Bundles called melanosomes are formed by what?
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What does the papilla supply nourishment to?
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Which large hair structure is located at the base of the hair follicle?
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Which hair color is at the greatest risk for sun damage and can turn yellow from too much sun exposure?
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Keratinization is a process whereby cells form the medulla.
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The diameter of the hair will be the same as what?
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What are the two primary parts of hair?
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What is the name of the transition stage in the middle of the three stages of hair growth?
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How much does human hair grow per month?
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What is the technical term for eyelash hair?
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What are three factors that affect the behavior of hair?
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Study Notes
Hair Structure and Growth
- Hair's natural flow or wave pattern is determined by the angle of the follicle.
- Hair color appears darker during the anagen stage of growth.
- The technical term for the hair on the head is "capilli."
- Gray hair results from reduced pigment in the cortex layer.
- The medulla is the central core of the hair shaft, often absent in fine hair.
- Tightly curled hair has a growth shape resembling a golf club, with the hair nearly doubled back over the follicle.
Hair Biology
- Melanosomes, responsible for pigment formation, are created by melanocytes.
- The papilla, a large structure located at the base of the hair follicle, supplies nourishment to the germinal matrix.
- Gray hair is particularly susceptible to sun damage, potentially turning yellow with excessive exposure.
Hair Growth and Development
- Keratinization is the process by which cells do not form the medulla.
- The diameter of hair matches the inside diameter of the hair follicle.
- Hair's two primary components are the hair fiber and the hair root.
- The transition stage between growth phases is known as the catagen stage.
- Human hair grows approximately 1/2 inch (1.25 cm) per month.
Specialized Hair Types
- Cilia is the technical term for eyelash hair.
Influences on Hair Behavior
- Hair behavior is influenced by heredity, environment, and color.
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Description
Test your knowledge on hair theory with these flashcards. Learn about the natural flow, growth stages, and other essential definitions related to hair. Perfect for those preparing for a retake or seeking to reinforce their understanding of hair science.
