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Hair shafts differ in size, shape, and color. In the eyebrows, they are short and stiff, but on the scalp they are longer and more flexible. Elsewhere on the body they are nearly invisible. Oval-shaped hair shafts produce wavy hair. Flat or ribbonlike hair shafts produce kinky or curly hair. Perfectly round hair shafts produce straight hair. The different types of melanin-yellow, rust, brown, and black-produced by melanocytes at the follicle base combine to create the many varieties of hair color, from the palest blonde to the richest black. With age, the production of melanin decreases, and hair color turns gray.



Read more: http://www.faqs.org/health/Body-by-Design-V1/The-Integumentary-System-Design-parts-of-the-integumentary-system.html#ixzz0W02WYyMI

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Q: Does round hair shafts result in wavy hair?
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