Completar Frases Ch 11 Properties of Hair & Scalp (D)Versión en línea Chemical Composition por Shawanna Whidbee 1 protein follicle originating composed Hair is of that grows from cells within the hair . 2 cells keratinization maturation The of these is called . 3 elements COHNS five nails elements skin Together , the that make up human hair are referred to as the to help people remember them ; they are also found in the and the . 4 hydrogen water bond broken heat dries cross link A is a weak , physical , - side bond that is easily by or ; these bonds reform when the hair . 5 salt polypeptide bonds bonds Weak side , physical , cross - linked between adjacent chains are . 6 relaxers chemical permanent disulfide bonds waves The hairs strongest side bonds ; are broken through and . 7 Melanin pigment Pheomelanin Eumelanin are the tiny grains of in the cortex that give natural color to the hair ; and . 8 curly straight wave pattern shape extremely wavy The of hair refers to the of the hair strand and is described as , , , or curly . 9 anyone African extremely extremely varying curl Asian Native straight curly and Americans tend to have hair , while American ? s tend to have hair ; however of any race , or mixed race can have hair with degrees of . 10 elasticity often low curly Extremely hair has .