| Term | Definition |
| Protection | against microorganisms, tissue from injury, UV rays |
| regulates body temperature | loss of heat and fluids, sweat glands |
| sensory receptor | touch, pressure, pain, temp |
| elimination | perspiration |
| synthesis of vitamin D | essential for bone growth |
| epidermis | outer most layer of skin |
| keratin | hard water-repellent protein |
| dermis | inner, thicker layer beneath epidermis |
| stria | stretch marks |
| subcutaneous | loose connective tissue and adipose |
| abrasion | cutting or rubbing away of skin as aresult of friction |
| abscess | localized collection of pus in any body part |
| bedsore | ulcer of skin over boney prominence |
| bulla | large blister |
| laceration | a tear in the skin with jagged edges |
| nodule | swelling protrusion above the skin |
| cyst | closed sac within skin that contains fluid |
| fissure | crack-like sore or groove in skin |
| albinism | absent of pigment in skin, hair, eyes |
| burns | tissue damage produced by flame, heat, chemicals, electricity |
| callus | painless thickening of epidermis at site of pressure or friction |