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16 Cards in this Set
- Front
- Back
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Hair
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Deep lying cells in the hair root produce horny cells that move upward through the hair follicles. Melanocytes are located at the root of the hair follicle.
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How much do nails grow each week?
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1 mm a week
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What is the purpose of sebum?
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lubricates the skin and minimizes water loss
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sweat glands
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Tiny,coiled glands found on almost all body surfaces concentrated in number in the palm of the hand and on the sole of the foot.
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About how many sweat glands are found in the palm of the hand and on the sole of the foot?
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3000 glands/square inch
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Hair follicle
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shafts or sacs that hold the hair fibers
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How long does it take a toenail to regrow completely?
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12-18 months
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Sebaceous glands are located in the dermis layer of the skin over the entire body, except for what 2 places on the body?
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1)palms of the hands
2)soles of the feet |
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About how many sweat glands are found on our body?
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2 million
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What happens to the hair when melanocytes stop producing melanin?
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hair turns gray
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nails
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horny plate covering and protecting part of the dorsal surface of the digits. A nail grows in thickness and length as a result of division of cells in the region of the nail root.
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How long does it take a fingernail to regrow?
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can regrow in 3-5 months
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What gland secretes an oily substance? Name the oily substance.
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1)sebaceous gland
2)sebum |
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pore
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tiny opening on the surface of the skin
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What is almost pure water and is colorless and odorless?
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sweat or perspiration
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The odor produced when sweat accumulates on the skin is due to the action of what?
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action of bacteria on the sweat
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