Trichology & Anatomy – Illinois Cosmetology State Board Exam
Master trichology and anatomy concepts tested on the Illinois Cosmetology State Board Exam. These 25 flashcards cover hair structure, growth cycles, scalp conditions, and related anatomy essential for licensing success.
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Preview Questions
Question 1
What is the outermost layer of the hair shaft called?
Answer
The cuticle. It consists of overlapping scale-like cells that protect the inner layers of the hair.
Question 2
Which layer of the hair shaft contains melanin granules and gives hair its color?
Answer
The cortex. It is the middle layer of the hair shaft and makes up the majority of the hair's bulk and pigment.
Question 3
What is the term for the innermost layer of the hair shaft, sometimes absent in fine hair?
Answer
The medulla. It is a hollow or loosely structured core that runs through the center of the hair shaft.
Question 4
What type of melanin is responsible for red and blonde hair colors?
Answer
Pheomelanin. It produces yellow, red, and blonde tones, as opposed to eumelanin which produces brown and black tones.
Question 5
What is the chemical bond broken when hair is wet or thermally styled that is responsible for temporary changes in hair shape?
Answer
Hydrogen bonds. They are weak side bonds broken by water or heat and reform as hair dries or cools into a new shape.
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