| Term | Definition |
|---|
| Papillary | The first dermal, thin, and superficial layer of areaolar CT where the collagen and elastic fibers have many blood vessels. |
| Dermal Papilla | These are peg-like projections on the superior surface that indent the overlying epidermis. |
| Pressure Ulcer | Prolonged pressure causes blood flow to the skin to stop, which eventually leads to the breakdown of tissue (called necrosis) |
| Dermis | The second major skin region that is made up of strong, flexible areolar CT and binds the epidermis to the underlying tissues. |
| Supply Nutrients/ Maintain Heat | What do the dermal blood vessels do? |
| Sweat Pores | What makes the epidermal ridges leave 'fingerprints' behind? |
| Reticular | The second dermal layer made of irregular dense CT |
| Adipose Cells/Elastic Fibers/Hair follicles | Name three integumentary accessories that are found within the dermal layer stated in #7 |
| Short term trauma | What causes a blister? |
| Melanin/Hemoglobin/Carotene | What three pigments cause the variations in skin color? |
| Mole/Nevus | A benign localized overgrowth of melanocytes |
| Vitiligo | A condition where there is a partial or complete loss of melanocytes from patches of skin |
| Albinism | An inherited inability to produce melanin |
| Stratum Corneum/Dermis/Subcutaneous | Where is carotene found? |
| Protect against UV Rays | What is the function of melanin? |
| Blister | The separation of the epidermal and dermal layers by a fluid filled pocket |
| Hemoglobin | The pigment that flows in erythrocytes in the dermal capillaries; turns skin pink. |
| Prevent Heat Loss/Sense touch | What are the three important functions of hairs? |
| Lips/Palms/Soles | Name three places on the body where hair is not found. |
| Hair/Pili | Flexible strands produces by hair follicles that consist largely of dead, keratinized cells. |
| Trichosidirin | Iron-containing pigment that turns hair red |
| Root-under surface Shaft-above surface | Name the two parts of the hair and where it resides |
| Medulla/Cortex/Cuticle | List the three layers of a hair from deep to superficial. |
| Melanocytes | What is hair pigment made by? |
| Decreased melanin production/air bubbles | What causes white or grey hair? |
| Hair Bulb | What is the deep expanded end of the hair follicle called? |
| Hair Follicle Receptor | The knot of sensory nerve endings that wrap around each hair bulb. |
| Hair Papilla | Nipple-like bit of dermal tissue that protrudes into the bulb. |
| Hair Matrix | The actively dividing area of the hair bulb that produces the hair |
| Arrector Pili | A bundle of smooth muscle CT attached to each hair follicle. |
| Vellus | The body hair of children and women |
| Terminal Hair | coarser, longer hair of the eyebrows and scalp |
| nutrition and hormones | Two main factors that influence hair growth |
| 2.5 mm | Average hair growth per week |
| Age/Gender/Body Region | Hair growth varies due to what three factors? |
| Anagen/Catagen/Telogen | Three Growth Cycles of Hair |
| Anagen | Growth phase that ranges from weeks to years |
| Catagen | Regressive phase; when the matrix cells die and the hair bulb shrivels up |
| Telogen | Resting phase; lasts from one to three months |
| Proteins | Lifespan of hair varies and is controlled by... |
| Teen years to 40's | Hair Grows fastest during this time |
| Alopecia | Disorder in which hair is not replaced as fast as it is being lost |
| Short Growth Span | Why don't the short hairs merge from the follicles before shedding? |
| Peach Fuzz | The fine hairs that emerge in the bald areas |
| Androgens | What is terminal hair growth dependent on? |
Combine with other sets
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