Epidermis
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Created by:
ScottyIsThere on March 13, 2011
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Description:
Basic information about the epidermis.
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17 terms
Terms | Definitions |
|---|---|
 Epidermis | The outer, 5 layers thick, nonvascular, nonsensitive layer of the skin, covering the true skin or corium. |
| Cornified Layer | Top layer of the epidermis, avascular, dead (consists of dead cells), horns grow out of this layer on animals. |
| Basal Layer | Bottom layer of the epidermis, cuboidal cells, two cells thick, melanocytes & melanin (pigment designed to protect DNA), cell division. |
| What Color Do Active Melanocytes Make? | Brown. |
| What Color Does Carotene Make? | Yellow. |
| What Color Does Hemoglobin Make? | Red. |
| Fair Skin | Low carotene and low melanin. |
| Dark Skin | Active melanocytes. |
| Asian Skin | High carotene and low melanin. |
| Albinism | Genetic lack of color. |
| Freckles | High concentration of melanocytes, genetic. |
| Moles And Birthmarks | Clusters of melanocytes. |
| Keratinization | The gradual death of epidermal cells as they migrate from the basal layer to the cornified layer. |
| How Many Pounds Of Skin Does The Average Person Lose In A Lifetime? | 150 lbs. |
| How Long Does It Take For Skin To Be Replaced? | 20 to 30 days, 4 weeks. |
| Blisters | Friction between layers. |
| Keratin | Layer with hair. |
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