Anatomy and Physiology Chapter 6 Skin and the Integumentary System
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24 terms
Terms | Definitions |
|---|---|
 Epidermis | Outer layer of the integumentary system |
| Dermis | Inner layer of the integumentary system, connects Epidermis to underlying tissues, containes accessory structures. |
| Subcutaneous layer | Layer beneath the dermis, contains loose connective and adipose tissue. |
| Stratum Corneum | Outermost layer of the epidermis |
| Stratum lucidum | 2nd layer of the epidermis-only present in thickened skin of the palms and soles. |
| Stratum granulosum | 3rd layer of the epidermis. |
| Stratum Spinosum | 4th layer of the epidermis |
| Stratum Basale | 5th layer of the epidermis. |
| Basement Membrane | Seperates the Epidermis from the dermis. |
| Calluses | Areas of skin where the rate of cell division increases because the skin is rubbed or pressed regularly. |
| Melanin | Dark pigment that provides skin color. |
| Melanocytes | Specialized cell in epidermis that produce melanin |
| Vitamin D | Produced by skin cells when exposed to UV radiation. |
| Accessory Structures | Structures present in the Dermis that help skin perform its necessary functions. |
| Nails | Made of nail plate and nail bed, created by keratinized epithelial cells. |
| Hair Follicle | Contains the hair root, nourised by dermal blood vessels, as cells grow older cells are keratinized and become non-living hair. |
| Hair Shaft | Hair that extends above the skins surface. |
| Arrector Pili Muscle | pulls hair with in the follicle to make it stand on end Ex: goosebumps |
| Sebaceous Glands | Associated with hair follicles, secrete sebum. |
| Sweat Glands | Exocrine glands that originate in the dermis and release sweat to the skin surface. |
| Malignant Melanoma | The most dangerous form of skin cancer. |
| First Degree Burn | Burn that harms the epidermis only. |
| Second Degree Burn | Burn that harms some epidermis as well as some underlying dermis. |
| Third Degree Burn | Burn that destroys the epidermis, the dermis and accessory organs. |
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