Labels:bag | bed | bed | book | bulletin board | cell | earth | mountain | person | rock | sky | teddy bear | windowpane OCR: GROWING HAIR OUR HAIR grows from deep pits in your skin called hair follicles. Hair cells multiply at the bottom of each follicle, pushing the hair upw ards, until projects above the skin' surface As the hair grows, its cells fill with a tough strengthening material called keratin. The image shows four new hair shafts emerging from the scalp. The spiral pa tterns are formed by keratin scales. Keratin scales One of four growing hairs Scalp grow
