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AP CLC 244
Week 2 Thursday Dermis
| Question | Answer |
|---|---|
| Three layers of the skin | Epidermis, Dermis, Hypodermis |
| Dermis facts | The leather of the skin, Neurons, Vasculature (bloody), lymph. Two layers: Papillary, Reticular |
| Papillary (layer) | Interracial Fluid (I.F.), Collagen, elastin, vasculature (bloody). THE WAVY PART. |
| Why do we have finger prints | In the Papillary layer the papilla (nipple) is larger. Bumbs are dermal papillae. Collectively called friction ridges. |
| Why do fingers and toes wrinkle in water | Having to do with the nervous system. Helps you grab something better with the ridges. |
| Blister /blood blister | The papillary layer sends Interstical Fluid to protect the deeper layers. Blood blister means the papillary layer was hurt. The epidermis is not vascular. |
| Reticular layer, deeper, 80% | Collogene, not very vascular, filled with water, irregular connective tissue |
| Striae | Tears in the reticular layer, tear under your skin |
| Appendages of the skin | Sudoniferous glands , Sebaceous glands |
| Sudoniferous gladns | (sweat gland) Eccrine and Apocrine glands. Eccrine: water, salt, acid waste. On palm, soul, forehead. Apocine: sweat with protein and lipids. On arm pit, analgenital |
| sebaceious glands | oil glands only on hair. Secrete sebum. Bactericide (kills bacteria). Acne: sebum that blocks the duct. Open comedo - black head. Closed comedo - white head. |
Created by:
kanderson96