Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin.Each
strand of hair is made up of the medulla, cortex, and cuticle. The innermost region, the medulla, is not always present and is an open, unstructured region.The highly structural and organized cortex, or second of three layers of the hair, is the primary source of mechanical strength and water uptake. The cortex contains melanin, which colors the fiber based on the number, distribution and types of melanin granules. The shape of the follicle determines the shape of the cortex, and the shape of the fiber is related to how straight or curly the hair is. People with straight hair have round hair
fibersA pair of Tittibha birds, husband and wife lived on seashore. The female Tittibha bird was expecting to lay eggs and raise a family. When the time to lay eggs came, she asked her husband to look for a safe place to lay her eggs, "My dear, please look for some good and safe place for me to lay eggs as it is almost time for me to lay the them." But the male Tittibha bird said, "Dearest, where in the world could be a better place than this seashore? Please lay your eggs here." She disagreed, "The waves of sea on full moon nights are so high that they can drag even
an elephant into it. No, please find a place away from here." The male Tittibha bird laughed and insisted, "The Sea would not even dare to do any harm to my children! Do not fear unnecessarily and lay eggs here without any worries."
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