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ch.5
Integumentary Skin
| Integumentary | skin,gland,hair, nails |
| Epidermis | outer layer of skin stratifed squamous epithelium keratin |
| Keratin | tough water repellent of protein |
| Dermis | inner layer dense conn tissue is thick and deep contains both collagenous and elastic fibers contains nerves(sensory receptors)that detect change in the environment |
| Striae | stretch marks, located in the dermis |
| Subcutaneous layer | underlying structure that anchors the 2 layers. adipose layer is here |
| Dermis also known as | Stratum Corium |
| Subcutaneous also known as | hypodermis or superficial fascia |
| Skin Color is made up of | genetic, physiologic, environmental |
| Melanin | Dark pigment that is the basic skin color |
| Ablinism | inability to produce Melanin |
| Cartoen | Yellowish pigment |
| Epidermal Derivates | Hair,Nails,Glands,Sebum, and sweat |
| hair | nearly all body surfaces |
| Nails | thin plates of dead skin |
| Glands (2 glands) | Sebaceous: hair Sweat Glands: Secrete sebum |
| Sebum | oily secretion |
| Sweat is known as | Sudoriferous |
| 2 types of sweat glands | Merocrine Ceruminous |
| Merocrine | sweat glands on the skin |
| 2 types of Merocrine | Merocrine:create sweat Apocrine: create body odor |
| Ceruminous | are modified sweat glands that are found in the external auditory canal |
| cerumen | oily,sticky substance |
| Functions of the Skin | protection sensory reception regulation of body synthesis of Vitamin D |
| Burn | tissue damage that results from heat, certain chemicals, radiation or electricity |