| Term | Definition |
|---|
| accessory organs | anatomical structures located within the dermis, including the hair, nails, sebaceous glands, and sweat glands |
| fibers that make up the hair | composed of keratin |
| hair root | deeper cells that divide to grow a hair longer |
| hair shaft | older keratinized cells that form most of the length of a hair |
| arrector pili | small slip of smooth muscle attached to a hair |
| goose bumps | arrector pili contracts, the hair shaft stands up |
| melanin | gives hair its color |
| hair follicle | cavities in the dermis that contain the hair root. hair grows faster from the root |
| nail body | flat plate of keratin that forms most of the nails and covers the ends of fingers and toes |
| nail bed | connects the nail body to the tissue underneath |
| nail root | nails grow longer from, found at the base of the nail |
| cuticle | soft tissue that covers and protects the nail root |
| free edge | exposed edge that is trimmed |
| lunula | light-colored half-moon area at the base of the nail |
| sebaceous glands | found in dermis, secrete sebum directly into hair follicles |
| sebum | oil that lubricates the hair and skin; loss in old age, along with sun exposure, can account for wrinkles and dry skin |
| secretion from sebaceous glands | increase during adolescence, aiding in acne; decrease with age |
| sweat glands | or sudoriferous glands, about 2 million throughout body; coiled glands located in dermis |
| sweat duct | sweat travels to the surface of the skin in a |
| sweat pore | surface opening of a sweat duct |
| sweat glands function | cool the body as sweat evaporates |
| perspiration | or sweat contains a small amount of waste- usually colorless, odorless |
| apocrine glands | sweat glands in teh pubic and underarm areas that secrete thicker sweat, that produce odor when come in contact with bacteria on the skin |
Combine with other sets
Share on Facebook
Share on MySpace