Module 16 Skin

Adipocyte

fat cell

Albinism

condition of skin deficient pigment

Apocrine Sweat Gland

one large dermal exocrine glands in axilla and genital area responsible body odor

Basal Layer

deepest region of epidermis rising to all epidermal cells

Collagen

protein found in skin and connective tissue

Cuticle

band of epidermis at base and sides of nail plate

Dermis

middle layer of the skin

Eccrine Sweat Gland

most sweat producing exocrine glands in skin

Epidermis

outermost layer of the skin

Epithelium

layer of skin cells forming outer and inner surface of the body

Hair Follicle

sac within each hair grows

Integumentary System

skin and accessory structures

Keratin

hard protein in epidermis, hair and nails

Lunula

half-moon shaped whitish area at base of nail

Melanin

skin pigment

Eumelanin

brown-black pigment

Pheomelanin

red-yellow pigment

Paronychium

soft tissue surrounding nail border

Pore

tiny opening on surface of skin

Sebaceous Gland

oil secreting gland in dermis with hair follicle

Sebum

oily substance secreted by sebaceous glands

Squamous Epithelium

flat scale-like cells

Stratified

arranged in layers

Stratum Corneum

outermost layer of epidermis with flattened keratinized cells

Subcutaneous Layer

innermost layer of skin with fat tissue

caus/o

burn

cauter/o

heat, burn

cutane/o

skin

diaphor/o

profuse

hidr/o

sweat

ichthy/o

dry, scaly

kerat/o

hard

anthrac/o

black

chlor/o

green

cirrh/o

tawny yellow

eosin/o

rosy

lute/o

yellow

polio/o

gray

melan/o

black

xanth/o

yellow

myc/o

fungus

onych/o

nail

phyt/p

plant

pil/o

hair

rhytid/o

wrinkle

seb/o

sebum (oily secretion from sebaceous glands)

squam/o

scale-like

trich/o

hair

ungu/o

nail

xer/o

dry

Crust

collection of dried serum and cellular debris

Cyst

thick-walled closed sac or pouch with fluid

Erosion

wearing away or loss of epidermis

fissure

groove or crack-like sore

Macule

flat, pigmented lesion

Nodule

solid round elevated lesion

Papule

small, solid elevation on skin

Pustule

papule containing pus

Ulcer

open sore on skin or mucous membranes

Vesicle

small collection of clear fluid (blister)

Wheal

smooth swollen papule or plaque redder than surrounding skin

Alopecia

absence hair from areas

Ecchymosis

bluish-purplish mark on skin (bruise)

Petechiae

small pinpoint hemorrhage

Pruritus

itching

Acne

chronic papular and pustular eruption of skin with increase of sebum

Bullous Pemphigoid

rare autoimmune skin condition causing large fluid-filled blister

Cellulitis

diffuse, acute infection of skin

Eczema (atopic dermatitis)

inflammatory skin disease with erythematous, papulovesicular, or papulosquamous lesions)

Exanthematous Viral Diseases

rash of skin due to viral infection

Gangrene

death of tissue with loss of blood supply

Impetigo

bacterial inflammatory skin disease by vesicles, pustules, and crusted-over lesions

Psoriasis

chronic dermatitis by itchy, scaly red plaques with silvery gray scales

Scabies

contagious parasitic infection of skin with pruritus

Scleroderma

chronic disease of skin and internal organs with hardening and shrinking connective tissue

Systemic Lupus Erythematosus (SLE)

chronic autoimmune inflammatory disease of collagen

Tinea

infection of skin caused by fungus

Urticaria (hives)

acute allergic reaction with red round wheals

Vitiligo

loss of pigment in areas of skin

Callus

increased growth of cells in keratin layer of epidermis caused by pressure or friction

Keloid

excess thickened scar after trauma or surgical incision

Keratosis

thickened and rough lesion epidermis (aging or skin damage)

Nevus

pigmented lesion skin

Verruca

epidermal growth caused by virus

Bacterial Anayses

skin examined for presence of microorganism

Curettage

use of sharp dermal curette to scrap away skin lesion

Electrodesiccation

tissue is destroyed by burning electric spark