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Physiology
Oliva Geist set #1 (ch10)
| Question | Answer |
|---|---|
| epidermis | the superficial thinner layer |
| dermis | the deep thicker layer |
| dermoepidermal junction | the area where the cells of the epidermis meet the connective tissue cells of the dermis |
| epidermal ridges (aka friction ridges) | in thick skin the underlying dermal papillae are raised in curving parallel epidermal ridges, formed fingerprints |
| melanocytes | cells that contribute colored pigments to the skin and serve to decrease the amount of ultraviolet light that can penetrate into the deeper layers of the skin |
| Langerhans cells (epidermal dendritic cells) | branched cells that play a role in immunity |
| Stratum basale | base layer- single layer of columnar cells. |
| stratum germinativum | growth layer |
| stratum spinosum | spiny layer of the epidermis formed from8-10 layers of irregularly shaped cells with very prominent intercellular bridges or desomose |
| stratum granulosum | where the process of surface keratin formation begins |
| keratohyalin | intensely staining granules required for surface keratin formation |
| stratum lucidum | very flat closely packed and clear |
| stratum corneum | most superficial layer of epidermis, composed of very thin squamous cells are dead at skin surface |
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olivag