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Chapter 2
Integumentary System
| Term | Definition |
|---|---|
| hist/o | tissue |
| kerat/o | hard |
| onych/o | nail |
| xer/o | dry |
| epithelium | cellular avascular layer covering external and internal surfaces of the body |
| stratum basale | deepest layer of the epidermis, also called the basal layer |
| melanin | dark brown to black pigment contained in melanocytes |
| dermis | dense, fibrous connective tissue layer of the skin, also known as corium |
| keratin | hard protein material found in the epidermis, hair, and nails |
| lesion | an area of pathologically altered tissue; types of lesions are primary, secondary, vascular, and purpuric |
| plaque | a solid mass greater than 1 cm in diamter and limited to the surface of the skin |
| tumor | a solid mass larger than 1-2 cm |
| bulla | a blister larger than 0.5 cm (e.g., a second-degree burn) (bulla = bubble) |
| erosion | gnawed away; loss of superficial epidermis, leaving an area of moisture but no bleeding (e.g., area of moisture after rupture of a vesicle) |
| excoriation | a scratch mark |
| crust | a dried residue of serum (body liquid), pus, or blood on the skin (e.g., as seen in impetigo) |
| cherry angioma | a small, round, bright red blood vessel tumor on the skin, seen mostly in people over age 30 |
| telangiectasia | a tiny, red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole, most commonly on the face, neck, or chest (telos = end); also called spider angioma |
| ecchymosis | bruise; a black and blue mark; a large purpura (chymo = juice) |
| keloid | an abnormal overgrowth of scar tissue that is thick and irregular (kele = tumor) |
| Rubella | An acute but mild disease cause by rubella virus, also called German Measles |
| eczema | generic term for inflammatory conditions of the skin characterized by inflamed papules and vesicles that crust and scale, often with sensations of itching and burning |
| herpes simplex virus type 2 (HSV-2) | sexually transmitted, ulcer-like lesions of the genital and anorectal skin and mucosa; after initial infection, the virus lies dormant in the nerve cell root and may recur at times of stress |
| systemic lupus erythematosus (SLE) | a more severe form of lupus involving the skin, joints, and often vital organs (e.g. lungs or kidneys) |
| paronychia | inflammation of the nail fold |
| scabies | a contagious skin disease marked by itching and small raised red spots, caused by the itch mite; intense pruritus between the fingers, genitalia, trunk and extremities is common (scabo = to scratch) |
| biopsy | removal of a small piece of tissue for microscopic pathologic examination |
| frozen section (FS) | a surgical technique that involves cutting a thin piece of tissue from a frozen specimen for immediate pathologic examination |
| debridement | removal of dead tissue from a wound or burn site to promote healing and to prevent infection |
| heterograft or xenograft | graft transfer between different species, such as from animal to human (hetero = different; zeno = strange) |
Created by:
mgibson0117
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