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Chapter 4
| Question | Answer |
|---|---|
| epidermis | outer layer of skin |
| keratin | horny or cornified layer composed of protein. It is contained in the hair, skin and nails. |
| melanin | color or pigmentation of the skin |
| dermis | inner layer of the skin (also called true skin) |
| sudoriferous glands | tiny, coiled, tubular structures that emerge through pores on the skins surface and secrete sweat |
| sebaceous glands | secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis |
| hair definition | compressed, keratinized cells that arise from hair follicles, the sacs that enclose the hair fibers |
| nails | originate in the epidermis. Nails are found on the upper surface of the ends of the fingers and toes. |
| Lunula | white area at the base of the nail |
| cutane/o, derm/o, dermat/o | skin |
| hidr/o | sweat |
| kerat/o | horny tissue, hard |
| onych/o | nail |
| seb/o | sebum (oil) |
| trich/o | hair |
| aut/o | self |
| bi/o | life |
| coni/o | dust |
| crypt/o | hidden |
| heter/o | other |
| myc/o | fungus |
| necr/o | death |
| pachy/o | thick |
| rhytid/o | wrinkles |
| staphl/o | grapelike clusters |
| strept/o | twisted chains |
| xer/o | dry |
| epi | on, upon, over-prefix |
| intra | within-prefix |
| para | beside, beyond, around, abnormal-prefix |
| per | through-prefix |
| sub | under, below-pre |
| trans | through, across, beyond-pre |