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Skin!!
integumentary system
| Term | Definition |
|---|---|
| Epidermis | Outermost covering |
| Melanin | Can have a black, brown or yellow tint, deep in edidermis |
| Subcutaneous | adipose layer, also known as hypodermis |
| shaft | protrudes from skin surface |
| Keratin | nonliving protein substance |
| Dermis | considered the true layer of skin |
| Sudoriferous | sweat gland |
| Hair Follicle | tube that holds the hair root |
| Arrector Pili | smooth muscle causing "goosebumps" |
| Matrix | another term for nailbed |
| Dermatitis | inflammation of the skin |
| Melanocytes | cells that contain skin pigment |
| Albinsim | caused by an absence of melanin |
| Papillae | permanent ridges of the skin |
| Cortex | The outer cuticle layer of the hair shaft |
| Root | part of the hair implanted in the skin |
| Sebaceous glands | oil gland |
| Sebum | lubricates the skin, keeping it soft and pliable, oil substance |
| Papilla | contains capillaries the nourish the hair follocle |
| Alopecia | baldness |
| Kertinoctytes | produce keratin, fiberous protein that helps protect |
| Stratum Basale | deepest epidermal layer, attached to underlining dermis, single row of cells 4th |
| Stratum Spinosum | 3rd several layers thick |
| Stratum Granulosum | 2nd layer, waterproof |
| Stratum Lucidum | clear layer1.5 layer, |
| Stratum Corneum | 1st layer,nstratified sqaumous |
| Medulla | central core, middle |
| Cortex | bulky layer, sorrounds medulla |
| Cuticlle | Out side of cortex, lining |
| Papillary Layer | Layer of Dermis, connective tissuse, elastic fibers and collegen |
| Reticular Layer | 80% of thickness, dense irregular, connective, norish layer with blood vessels, by hypodermis |
| Langerhans cells | help to activate our immune system, injest foring substance |
| Merkel cells | sensory nerve ending |
| Desmosomes | adhesion, linkes protiens that attached to cells |