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| Pregunta | Respuesta |
| epidermis | outermost layer |
| dermis | thickest layer where the hair grows |
| arrector pili muscle | pulls the hair upright |
| sebaceous gland | releases oil on to the hair |
| keratin | main protein in hair |
| subcutaneous tissue | where fat is stored |
| hair bulb | bottom of hair shaft |
| sebum | the oil released by the sebaceous gland |
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