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MT Chapter 2
| Term | Definition |
|---|---|
| What are all the structures in the integumentary system? | Skin, Hair, Nails, Sweat glands, Sebaceous (oil) glands |
| What are the 4 main functions of the integumentary system? | Protect the body from injury and intrusion of microorganisms, helps regulate body temperature, and houses receptors for the senses of touch, pressure and pain |
| What are the 3 layers of the skin? | epidermis dermis subcutaneous layer |
| keratin | a hard protein substance |
| adip/o | fat |
| corne/o | horn, hard |
| cutane/o | skin |
| melan/o | black |
| derm/o, dermat/o | skin |
| hidr/o | sweat |
| onych/o | nail |
| purpur/o | purple |
| scler/o | hard |
| trich/o | hair |
| epithelium | cellular avascular layer covering external and internal surfaces of the body |
| epidermis | outer layer of the skin |
| stratum corneum | the outer layer of the epidermis, made up of several layers of flat keratinized (hard, proteinaceous) cells |
| melanin | dark brown to black pigment contained in melanocytes |
| collagen | protein substance in skin and connective tissue |
| What is made of kerarin? | Hair and nails |
| What is the outer most layer of the epidermis? | stratum corneum |
| lesion | an area of pathologically altered tissue |
| What are the types of lesions? | primary secondary vascular purpuric |
| primary lesions | lesions arising from previously normal skin |
| patch | a flat, discolored area on the skin larger than 1 cm |
| tumor | a solid mass larger than 1–2 cm |
| excoriation | a scratch mark |
| fissure | a linear crack in the skin |
| cherry angioma | a small, round, bright red blood vessel tumor on the skin, seen mostly in people over age 30 |
| A mole is called a | nevus |
| A freckle is an example of a | macule/macula |
| rash | a general term for skin eruption |
| skin pigmentation | skin color resulting from the presence of melanin |
| depigmentation | loss of melanin pigment in the skin |
| hypopigmentation | areas of skin lacking color because of deficient amounts of melanin |
| What is baldness, or lack/ deficiency of hair? | alopecia |
Created by:
ghardin
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