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02a Integumentary System Terminology

02a Integumentary System Terminology - Anatomical Terms...

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Anatomical Terms Epithelium Cells covering external and internal surfaces of the body Epidermis Thin outer layer of the skin Squamous cell layer Flat, scalelike epithelial cells comprising the outermost epidermis Basal layer Deepest player of the epidermis Melanocyte Cell in the basal layer that give color to skin Melanin Dark brown to black pigment contained in melanocytes Dermis Dense, fibrous connective tissue layer of the skin, also know as the corium Sebaceous glands Oil glands in the skin Sebum Oily substance secreted by the sebaceous glands Sudoriferous glands Sweat glands (sudor= sweat, ferre= to bear) Subcutaneous layer Connective and adipose tissue just under the dermis Collagen Protein substance in the skin and connective tissue (kola= glue, gen=producing) Hair Outgrowth of skin composed of keratin Nail Outgrowth of the skin at the end of each finger and toe; also composed of keratin Keratin Hard protein material found in the epidermis, hair, and nails Combining Forms Adip(o)/ lip(o)/ steat(o) Fat derm(o)/ dermat(o)/ cutane(o) Skin erythr(o) Red hidr(o) Sweat hist(o)/ histi(o) Tissue kerat(o) Hard leuk(o) White melan(o) Black myc(o) Fungus onych(o) Nail plas(o) Formation purpur(o) Purple seb(o) Sebum squam(o) Scale trich(o) Hair xer(o) Dry xanth(o) Yellow Symptomatic Terms Lesion An area of pathologically altered tissue (two types: primary and secondary) Primary lesions Lesions arising form previously normal skin Macule A flat, discolored spot on the skin up to one cm across, as in a freckle Patch A flat, discolored area on the skin larger
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than one cm, as in a vitiligo Papule A solid mass on the skin up to half a cm in diameter, as in a nevus or a mole Plaque A solid mass greater than one cm in diameter, limited to the surface of the skin Nodule A solid mass greater than one cm, extending deeper into the epidermis Tumor A solid mass larger than one or two cm Wheal An area of localized skin edema, as in a hive Vesicle Little bladder; an elevated fluid-filled sac within or under the epidermis up to half a cm in diameter Bulla A blister larger than half a cm, as in a second degree burn Postule A pus filled sac Secondary lesion Lesions that result in changes in primary lesions Erosion Gnawed away; loss of superficial epidermis leaving an area of moisture but no bleeding Ulcer An open sore on the skin or mucous membrane that can bleed and scar; sometimes accompanied by infection Exoriation A scratch mark Fissure A linear crack in the skin Scale A thin flake of exfoliated epidermis Crust Dried residue of serum, pus, or blood on the skin Cicatrix of the skin Mark left by healing of a sore wound, showing the replacement of destroyed tissue by fibrous tissue Keloid An abnormal overgrowth of scar tissue that is thick and irregular Kele Tumor Cicatrix Scar Bulla Bubble Telos End Vascular lesions Lesions of a blood vessel Cherry angioma A small, round, bright blood vessel tumor on the skin, often on the trunk of the elderly Telangiectasia A tiny, red blood vessel lesion formed by
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