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Integumentary system
Hair and nails
| Term | Definition |
|---|---|
| Hair shaft | Portion of the hair visible above the skin surface. |
| Hair root | Portion of the hair beneath the skin surface. |
| Hair follicle | Tubelike sac in the dermis out of which the hair shaft develops. |
| Melanocyte | Cell in the epidermis that produces melanin |
| Alopecia | Lack of hair in spots; baldness. |
| Epilation/ Depilation | Removal of hair by the roots. |
| Nails | Thin layer of keratin that covers the distal portion of fingers and toes |
| Lunula | Half-moon-shaped area at the base of the nail plate. |
| Cuticle | Thin band of epidermis that surrounds the edge of nails, except at the top. |