Term
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Definition
outer (most superficial) layer of skin;
made of stratified squamous epithelium |
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Term
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Definition
inner layer of skin;
most of the thickness of skin;
made up of irregular connective tissue;
makes the skin tough and flexible |
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Term
| subcutaneous tissue (hypodermis) |
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Definition
| loose connective tissue that connects skin to inner organs |
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Term
| 3 special properties of epidermis |
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Definition
1. water proof
2. outer layers intended to wear away
3. melanin |
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Term
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Definition
| tube of epidermis that contains the proximal part of hair |
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Term
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Definition
| lower half of hair that is still alive cells |
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Term
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Definition
| upper half of hair that is dead cells |
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Term
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Definition
| swelling at the base of a hair where cell growth takes place |
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Term
| root sheath (part of hair) |
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Definition
| entire walls of the follicle |
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Term
| hair papilla (part of hair) |
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Definition
| little bump of dermis that pushes into the bulb of hair |
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Term
| arrector pili (part of hair) |
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Definition
little muscle that extends to and ends at the junction between the dermis and epidermis;
makes hairs stand on end |
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Term
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Definition
| oil glands (mostly empty into hair follicle); keeps skin soft and flexible and prevents cells from wearing away too fast |
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Term
| Merocrine (eccrine) gland |
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Definition
| sweat gland (produce secretion that is mostly water but some ions and metabolic waste products); cools body through evaporation |
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Term
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Definition
| base of nail where cells divide and push up |
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Term
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Definition
| light arch at the base of a nail (where cells start to become dead) |
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Term
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Definition
| externally visible part of nail |
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Term
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Definition
| modified layer of skin that nail rests on top of (tightly bound to nail body) |
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Term
| eponychium (part of nail) |
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Definition
| cuticle (fold of skin at base of nail) |
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