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11 Cards in this Set
- Front
- Back
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What types of tissues make up the epidermis and the dermis?
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-the epidermis is composed of epithelial tissue, the dermis is made up of connective tissue
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What is the function of melanin?
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-Melanin protects DNA of keratinocytes from the damaging effects of UV light
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Which epidermal layer includes stem cells that continually undergo cell division?
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-The stratum basale
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Why does it hurt when you pluck a hair out but not when you have a haircut?
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-Plucking a hair stimulates hair root plexuses in the dermis, shaft hair cells are already dead and lack nerves
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Why are nails so hard?
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-because they are composed of tightly packed, hard, keratinized epidermal cells
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Would you expect an epidermal would bleed? Why or why not?
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-Since the epidermis is avascular, an epidermal wound would not produce any bleeding
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What is the composition of vernix caseosa?
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-consists of secretions from sebaceous glands, sloughed off peridermal cells and hairs
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Which is the most common type of skin cancer?
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-basal cell carcinoma
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What factors determine the seriousness of a burn?
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-by the depth and extent of the area involved, the individual's age, and general health
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What percentage of the body would be burned if only the anterior trunk and anterior left upper limb were involved?
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-about 22.5% of the body would be involved
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What parts of the body are usually affected by pressure ulcers?
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-tissues that overlie bony projections subjected to pressure such as shulders, hips, buttocks, heels, and ankles
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