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17 Cards in this Set
- Front
- Back
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Largest organ of the body |
skin |
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two layers of skin |
epidermis dermis |
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epidermis |
outer layer, protective layer made of dead keratinized epithelial cells |
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dermis |
middle layer, connective tissue with blood vessels nerve endings and skin structures |
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subcutaneous layer |
connects skin to muscles, under the dermis layer |
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layers of epidermis from outer to inner |
stratum corneum stratum lucidum stratum granulosum straum spinosum stratum basale |
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mitosis occurs in the skin |
innermost stratum germinativum (includes stratum basale and stratum spinosum |
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melanin |
protein pigments the epidermal cells contain, protects against radiation from the sun |
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dermis composed of |
fibrous connective tissue with blood vessels sensory nerve endings hair follicles and glands |
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two types of sweat glands |
eccrine apocrine |
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eccrine sweat gland |
regulate body temp by releasing watery secretion that evaporates from surface of skin |
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apocrine secretion |
mainly in armpit and groin area, contains bits of cytoplasm from secreting cells (resulting in body odor) |
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body odor |
secreting cell debris attracts bacteria in the presence of bacteria on skin |
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sebaceous glands |
release oily secretion (sebum) through hair follicles that lubricates skin and prevents drying |
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sebum |
oily secretion, released through sebaceous glands , produced by holocrine secretion, becomes clogged during adolescence |
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appendages of skin include |
hair nails |
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keratin |
strong protein, composes hair and nails |
