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Key Terms Chapter 4
Integumentary System
| Question | Answer |
|---|---|
| cutaneous | Pertaining to the skin (from Latin cutis, meaning “skin”) |
| derma | Skin (from Greek) |
| dermis | The layer of the skin between the epidermis and the subcutaneous tissue; the true skin or corium |
| epidermis | The outermost layer of the skin (from epi-, meaning “upon or over” and derm, meaning “skin”) |
| hair | A thread-like keratinized outgrowth from the skin (root: trich/o) |
| hair follicle | The sheath in which a hair develops |
| integumentary system | The skin and its associated glands, hair, and nails |
| keratin | A protein that thickens and toughens the skin and makes up hair and nails (root: kerat/o) |
| melanin | A dark pigment that gives color to the hair and skin and protects the skin against the sun’s radiation (root: melan/o) |
| nail | A plate-like keratinized outgrowth of the skin that covers the dorsal surface of the terminal phalanges (root: onych/o) |
| sebaceous gland | A skin gland that produces sebum; usually associated with a hair follicle (root: seb/o) |
| sebum | A fatty secretion of the sebaceous glands that lubricates the hair and skin (root: seb/o) |
| skin | The tissue that covers the body; the integument (roots: derm/o, dermat/o) |
| subcutaneous layer | The layer of tissue beneath the skin; also called the hypodermis |
| atopic dermatitis | Hereditary, allergic, chronic skin inflammation with pruritus (itching); eczema |
| basal cell carcinoma | An epithelial tumor that rarely metastasizes and has a high cure rate with surgical removal |
| cicatrization | The process of scar formation; a scar is a cicatrix (SIK-ah-triks) |
| debridement | Removal of dead or damaged tissue, as from a wound |
| dehiscence | Splitting or bursting, as when the layers of a wound separate |
| dermatitis | Inflammation of the skin, often associated with redness and itching; may be caused by allergy, irritants (contact dermatitis), or a variety of diseases |
| dermatology | Study of the skin and diseases of the skin |
| dermatome | Instrument for cutting thin skin sections for grafting |
| eczema | A general term for skin inflammation with redness, lesions, and itching; atopic dermatitis |
| erythema | Diffuse redness of the skin |
| escharotomy | Removal of scab tissue resulting from burns or other skin injuries; a scab or crust is an eschar (ES-kar) |
| evisceration | Protrusion of internal organs (viscera) through an opening, as through a wound |
| exudate | Material, which may include fluid, cells, pus, or blood, that escapes from damaged tissue |
| Kaposi sarcoma | Cancerous lesion of the skin and other tissues, seen most often in patients with AIDS |
| keloid | A raised, thickened scar caused by tissue overgrowth during scar formation |
| lupus erythematosus | A chronic, inflammatory, autoimmune disease of connective tissue that often involves the skin; types include the more widespread systemic lupus erythematosus (SLE) and a discoid form (DLE) that involves only the skin |
| melanoma | A metastasizing pigmented skin tumor that arises from melanocytes; malignant melanoma |
| pemphigus | An autoimmune disease of the skin characterized by sudden, intermittent formation of bullae (blisters); may be fatal if untreated |
| pressure ulcer | An ulcer caused by pressure to an area of the body, as from a bed or chair; decubitus (de-KU-bih-tus) ulcer, bedsore, pressure sore |
| pruritus | Severe itching |
| psoriasis | A chronic hereditary dermatitis with red lesions covered by silvery scales |
| rule of nines | A method for estimating the extent of body surface area involved in a burn by assigning percentages in multiples of nine to various body regions |
| scleroderma | A chronic disease that is characterized by thickening and tightening of the skin and that often involves internal organs in a form called progressive systemic sclerosis (PSS) |
| squamous cell carcinoma | An epidermal cancer that may invade deeper tissues but tends not to metastasize |
Created by:
ghostofpima
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