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| layer of skin made up of stratified squamous epithelium |
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| layer of skin made up of areolar and dense irregular connective tissue. |
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| a subcutaneous layer, filled mostly with fat; this fat serves as insulation as well as fuel storage. |
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| layer of the epidermis which constantly undergoes mitosis to replace cells exfoliated from the skin's surface. |
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| layer of the epidermis which consists of cells attached to one another by fibrous desmosomes which enable tje skin to be pulled and stretched without the cells pulling apart. |
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| skin cells die and become hard, flattened cells completely filled with keratin and keratohyaline. |
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| When this layer of the epidermis thickens as a result of constant pressure it produces "corns" and calluses seen on the feet and hands. |
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| has the presence of the stratum lucidium. |
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| there is NO stratum lucidum and there may be fewer layers in the stratum spinosum. |
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| varies in colors among the races and helps protect the cells from UV radiation. |
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| this occurs when genetic change result in turning on, or not turning off, genes which regulate normal cell division and tissue growth. |
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| this type of cancer occurs in the keratinocytes of the intermediate or transitional layers of the epidermis. |
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| this results in the protective layer of flattened, dead cells found in the outer cornified layer. acceleration of this mechanism is an important response of these cells to sun exposure. If this mechanism fails then these cells can become abnormal and produce cancer. |
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| this cancer is the result of an abnormal growth of the basal cells. These cells are normally protected from UV exposure by the melanin secreted by nearby melanocytes. This form of cancer can usually be successfully treated surgically of caught in time. |
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Definition
| This is a cancer of the melanocytes which is the most dangerous because it often metastasizes to other tissues and organs. |
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Definition
| hairs are bathed in this oily substance which helps the skin to remain moist and resist water loss. |
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Definition
| this is used in many cosmetics and is sebum from sheep. |
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| free nerve endings which respond to change in shape of the capsule by producing an action potential (nerve signal); they are fast adapting, which means they stop responding to a continuous stimulus. That is why you don't notice your clothes touching your body. |
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| these nerves project into the dermis just below the epidermis, providing sensations of pain when they are disrupted. |
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| secrete watery liquid for thermoregulation; are extensive on skin. |
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| found in groin and axilla (arm pit), secret more viscous fluid containing pheromones, believed important for sexual arousal. |
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Term
| Sudoriferous gland and duct |
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Definition
| sweat gland; two types eccrine and apocrine |
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Term
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Definition
| these muscles are found in the dermis and are attached at one end to the hair root, and at the other end to the basement membrane of the epidermis. They are controlled by the autonomic nervous system and are responsible for raising the hair roots to produce "goose bumps" during thermoregulation and stress situations. |
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Definition
| blood vessels invade the clot and the budding capillaries. |
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