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Integumentary System
| Term | Definition |
|---|---|
| Integumentary System | The organ system that includes the skin and its accessory structures |
| Epidermis | Outer, epithelial layer of the skin |
| Dermis | The thick layer of skin beneath the epidermis |
| Subcutaneous Layer | Loose connective tissue layer beneath the skin; also called the hypodermis |
| Stratum Basale | Deepest layer of the epidermis, where cells divide; also called the stratum germinativum |
| Keratin | Intracellular protein in epidermis, hair, and nails |
| Stratum Corneum | Outer, horny layer of the epidermis |
| Melanin | Dark pigment generally found in skin and hair |
| Eumelanin | Brownish-black pigment |
| Pheomelanin | Reddish-yellow pigment |
| Nails | Protective plate at the distal end of a finger or toe |
| Hair Follicles | Tubelike depression in the skin where a hair develops |
| Sebaceous Glands | Skin gland that secretes sebum |
| Sebum | Oily secretion of the sebaceous glands |
| Sweat Glands | Exocrine gland in skin that secretes a mixture of salt, water, and wastes such as urea |
| Inflammation | Tissue response to stress that includes pain, warmth, redness, and swelling |