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Protein filament that grows from follicles discovered in the dermis, or skin Hair is a protein filament that grows from follicles discovered in the dermis. Hair is among the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in roots which produce thick terminal and great vellus hair.


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Attitudes towards various forms of hair, such as hairdos and hair elimination, vary widely across various cultures and historic durations, but it is frequently utilized to suggest a person's individual beliefs or social position, such as their age, sex, or religion. Overview The word "hair" usually refers to 2 distinct structures: the part underneath the skin, called the hair roots, or, when pulled from the skin, the bulb or root.


the shaft, which is the difficult filamentous part that extends above the skin surface. A cross area of the hair shaft might be divided roughly into 3 zones. Hair fibers have a structure including several layers, beginning with the outside: the cuticle, which includes several layers of flat, thin cells laid out overlapping one another as roofing system shingles the cortex, which includes the keratin packages in cell structures that remain approximately rod-like the medulla, a disorganized and open location at the fiber's center Description Each strand of hair is comprised of the medulla, cortex, and cuticle.


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The extremely structural and organized cortex, or second of 3 layers of the hair, is the main source of mechanical strength and water uptake. The cortex contains melanin, which colors the fiber based upon the number, distribution and types of melanin granules. The shape of the follicle figures out the shape of the cortex, and the shape of the fiber is associated with how straight or curly the hair is.


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Oval and other shaped fibers are typically more wavy or curly. The cuticle is the outer covering. Its intricate structure slides as the hair swells and is covered with a single molecular layer of lipid that makes the hair push back water. The size of human hair differs from 0. 017 to 0.



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