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12 Cards in this Set
- Front
- Back
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Functions of skin
Blood reservoir |
Contains extensive network of blood vessels |
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Protection |
Physical, chemical, and biological barrier |
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thermorgulation |
Perspiration cools body |
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Cutaneous sensation |
Touch, pressure, vibration, tickle, heat, cold, pain arise in the skin |
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Synthesis of vitamin D precurso |
Activated by sun |
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Excretion |
400ml of water a day lost through the skin, also small amounts of salt ammonia and urea |
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General structure of skin |
Largest organ in the body 20 square feet 1-3mm thick Weighs about 10lbs |
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Epidermis |
The outer layer |
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Dermis |
The deeper the layer beneath the epidermis |
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Subcubcutaneous layer |
Below the dermis, not a part of the skin |
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Factors that determine skin color |
•melanin - produced by melanocytes in the epidermis Colors the skin from yellow to black •same number of melanocytes in everyone but differing amounts of pigment produced |
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Glands of skin
Sebaceous gland (oil) |
Connected to the hair follicles in the dermis |
