| Term | Definition |
|---|
| holds the major portions of hair follicles as well as oil and sweat glands | dermis |
| prolonged pressure causes blood flow to the skin to stop | pressure ulcer |
| breaking down of tissue | necrosis |
| peg-like projections on the superior surface that indent the overlying epidermis | dermal papillae |
| make fingerprints | epidermal ridges |
| thin superficial layer of areaolar CT in which the collagen and elastic fibers are heavily invested with blood vessels | papillary |
| two layers of dermis | papillary/ reticular |
| consists of dense irregular CT containing collagen, elastic fibers, adipose cells, hair follicles, nerves, sebaceous glands, and sudoriferous glands | reticular |
| stretch marks | striae |
| short term but acute trama that causes blisters | homeostatic imbalance |
| seperation of the epidermal and dermal layers by fluid filled pocket | blister |
| three pigments that contribute to skin color | melanin/ carotene/ hemoglobin |
| yellow- red or brown- black pigment produced by melanocytes | melanin |
| number of these are the same in all humans | melanocytes |
| causes differences in color | amount of pigment produced by melanocytes |
| benign localized overgrowth of melanoctyes | nevus or mole |
| an inherited inability to produce melanin | albinism |
| condition in which there is a patrial or complete loss of melanocytes from patches of skin | vitiligo |
| yellow-orange pigment | carotene |
| causes skin to turn red | hemoglobin |
| important functions of hair | protection/ reduce heat loss/ sensing light touch |
| areas that lack hair | palms/ soles/ lips/ nipples/ external genitalia |
| hair consists largely of these type of cells | dead, keratinized cells |
| region of hair that projects from the follicle | shaft |
| the part of hair embedded in the skin | root |
| central core of a string of hair | medulla |
| layer surrounding the medulla | cortex |
| outermost layer of string of hair | cuticle |
| makes up hair pigment | melanocytes |
| this color results from the decreased melanin in hair | gray or white |
| this color results from iron containing pigment | red |
| iron containing pigment | trichosiderin |
| the deep expanded end of the hair follicle | hair bulb |
| a knot of sensory nerve ending that wraps around each hair bulb | hair follicle receptor |
| nipple-like bit of dermal tisssue that protrudes into the hair bulb | hair papillae |
| contains a knot of capillaries that supplies nutrients to the growing hair and signals growth | hair papillae |
| actively dividing area of the hair bulb that produces the hair | hair matrix |
| bundle of smooth muscle attached to each follicle | arrector pili |
| produces goosebumbs | arrector pili |
| these occur in cold temperatures and/or fear | goosebumbs |
Combine with other sets
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