Medical Terminology Chapter 10

Front 1

Integumentary system

Back 1

--one of the largest organ systems in the body

--consists of skin and its appendages (appendages include glands, hair, fur, wool, feathers, scales, claws, beaks, horns, hooves, and nails)

Front 2

skin

Back 2

--a physical barrier that protects animals from microbial infection, injury, ultraviolet rays, chemicals, and toxins

--plays a role in waterproofing the body, preventing fluid loss, providing temperature regulation through vasodilation and vasoconstriction, excreting wastes, providing species-specific coloration, sensation, and providing a site for vitamin D synthesis

Front 3

What does skin cover?

Back 3

external surfaces of the body

Front 4

epithelial tissue

epithelium

Back 4

what skin is composed of

Front 5

cutane/o

derm/o

dermat/o

Back 5

skin

Front 6

-derma

Back 6

suffix meaning skin

Front 7

dermatology

Back 7

the study of skin

Front 8

What are the 3 layers that make up skin?

Back 8

--epidermis

--dermis

--subcutaneous layer

Front 9

epidermis

Back 9

--outermost, or most superficial layer of skin

--is several layers thick

--does not contain blood vessels (sometimes called avascular layer because of this)

--depends on the deepest layers for nourishment

--the thickest layers are found in the areas of greatest exposure like the foot pads and teats

Front 10

epi-

Back 10

above

Front 11

dermis

Back 11

skin

Front 12

The epidermis is made up of:

Back 12

--squamous epithelium

--basal layer

Front 13

squamous epithelium

Back 13

--composed of flat, platelike cells

--because these cells are arranged in many layers, this layer is called stratified squamous epithelium

Front 14

basal layer

Back 14

--the deepest layer of the epidermis

--cells layer, multiply, and push upward into the basal layer

--as they move superficially, they die and become filled with keratin

--also contains melanocytes

Front 15

keratin

Back 15

a protein that provides skin with its waterproofing properties

Front 16

kerat/o

Back 16

keratin

(can also mean horny or cornea)

Front 17

melanocytes

Back 17

produce and contains a black pigment called melanin

Front 18

melan/o

Back 18

black or dark

Front 19

melanin

Back 19

protects the skin from some of the harmful rays of the sun and is responsible for skin pigmentation; animals that have dark skin produce more melanin

Front 20

albinism

Back 20

absence of normal pigmentation; true albinism means that the hair, skin, and eyes have no pigmentation

Front 21

5 layers of the epidermis:

(from dermis to most superficial)

Back 21

--stratum basale (or stratum germinativum)

--stratum spiosum

--stratum granulosum

--stratum lucidum

--stratum corneum

(stratum means layer or sheetlike mass)

Front 22

stratum basale

(or stratum germinativum)

Back 22

deepest or basal layer that continually multiplies to replenish cells lost form the epidermal surface; Cuboidal or cubelike cells are arranged in rows.

Front 23

stratum spinosum

(or prickle or spinous layer)

Back 23

Layer immediately superficial to the stratum basal, which is thickest in hairless regions and in areas of high wear and tear. Keratinization and desquamation begin in this layer.

Front 24

stratum lucidum

Back 24

Layer immediately superficial to the stratum granulosum, which is clear because of the accumulation of keratin fibers in cell cytoplasm. This layer is not present in all species, but when present, it is found in areas of high wear and tear such as the foot pads.

Front 25

stratum corneum

(or horny layer)

Back 25

most superficial layer of the dermis, which consists of layers of dead, highly keratinized, and flattened cells

Front 26

keratinization

Back 26

the development of the hard, protein constituent of hair, nails, epidermis, horny structures, and tooth enamel

Front 27

desquamation

Back 27

the process in which cell organelles gradually dissolve

Front 28

dermis

corium

Back 28

--the layer directly deep to the epidermis

--composed of blood and lymph vessels, nerve fibers, and the accessory organs of the skin

--sensory nerve endings are the sensory receptors for touch, temperature, pain, and pressure

Front 29

perception

Back 29

the ability to recognize sensory stimuli

Front 30

tactile perception

Back 30

the ability to recognize touch sensation

Front 31

The dermis contains connective tissue composed of the following cells:

Back 31

--fibroblasts

--collagen

--histiocytes

--mast cells

--Histamine

--Heparin

Front 32

fibroblasts

Back 32

fiber-producing cells

Front 33

collagen

Back 33

--the major fiber in the dermis

--tough, flexible, fibrous protein found in skin, bone, cartilage, tendons, and ligaments

Front 34

-gen

Back 34

suffix meaning to produce

Front 35

histiocytes

Back 35

phagocytic cells that engulf foreign substances; also called tissue macrophages

Front 36

mast cells

Back 36

cells that respond to insult by producing and releasing histamine and heparin

Front 37

Histamine

Back 37

a chemical released in response to allergens that causes itching

Front 38

Heparin

Back 38

an anticoagulant chemical released in response to injury

Front 39

subcutaneous layer

(or hypodermis)

Back 39

--located deep to or under the dermis

--is composed of connective tissue

--contains a large amount of fat, or lipid

Front 40

adipocytes

Back 40

fat cells that produce lipid

Front 41

adip/o

Back 41

fat

Front 42

Appendages associated with the skin:

Back 42

--glands

--hair

--fur

--wool

--feathers

--scales

--claws

--beaks

--horns

--hooves

--nails

Front 43

2 main categories of glands:

Back 43

--sebaceous

--sweat

Front 44

sebaceous glands

(or oil glands)

Back 44

--lubricate the skin and discourage bacterial growth on the skin

--secrete and oily substance called sebum

--located in the dermis and are closely associated with hair follicles

--found in anal sacs, glands that produce musk, and circumoral and supracaudal glands, which cats use to mark territory when they groom and rub their tail, respectively

Front 45

seb/o

Back 45

sebum or oily substance

Front 46

sebum

Back 46

--oily substance released from its gland through ducts that open into the hair follicles

--it moves from the hair follicle to the skin surface where it lubricates the skin

--it slightly acidic and retards bacterial growth on the skin

Front 47

ducts

Back 47

tubelike passages

Front 48

ductules

Back 48

tiny ducts

Front 49

Why are sebaceous glands considered holocrine glands?

Back 49

the secreting cells and their secretions make up the discharge produced

Front 50

sweat glands

(or sudoriferous glands)

Back 50

--regulate body temperature and excrete wastes through sweat

--aggregations of cells located in the dermis

--divided into eccrine glands and apocrine glands

Front 51

eccrine sweat glands

Back 51

--produce and secrete water, salt, and waste (sweat)

--located in various regions of the body depending on the species

--tiny, coiled glands that have ducts that open directly onto the skin surface through pores

Front 52

apocrine sweat glands

Back 52

--found throughout the body

--the free end or apical end of the cell is cast off along with the secretory products

Front 53

hyperthermia

Back 53

high body temperature

Front 54

hypothermia

Back 54

low body temperature

Front 55

hidrosis

Back 55

the production and excretion of sweat

Front 56

hidr/o

Back 56

sweat

Front 57

anhidrosis

Back 57

the abnormal reduction of sweating

Front 58

hyperhidrosis

Back 58

excessive sweating

Front 59

ceruminous glands

Back 59

--modified sweat glands that are located in the ear canal

--they secrete cerumen (earwax), a waxy substance of varying colors depending on the species

Front 60

hair

Back 60

--helps control body heat loss and is a sense receptor

--rodlike fibers made of dead protein cells filled with keratin

--the shaft and the root are continuous and together make up the hair, which is produced by the hair follicle

Front 61

pil/i

pil/o

trich/o

Back 61

hair

Front 62

hair shaft

Back 62

--the portion of hair extending beyond the skin surface

--composed of the cuticle, cortex, and medulla

Front 63

cuticle

(on hair shaft)

Back 63

one cell layer thick and appears scaly

Front 64

cortex

Back 64

the main component of the hair shaft, is several layers thick, and is responsible for coat color

Front 65

medulla

Back 65

the innermost component of the hair shaft

Front 66

root

Back 66

the portion of the hair below the skin surface an dis surrounded by a hair follicle

Front 67

hair follicles

Back 67

--tubes that hold the hair fibers

--in the dermis, the follicle expands to form a hair bulb

--the cells at the base of the follicle divide rapidly and push the old cells toward the skin surface where they harden and undergo pigmentation

Front 68

arrector pili

Back 68

a tiny muscle attached to the hair follicle that causes the hair to stand erect in response to cold temperatures or stress

Front 69

piloerection

Back 69

the condition of the hair standing straight up

Front 70

nails, claws, and hooves

Back 70

--cover the distal phalanx of animals

--they all have a wall, sole, and pad

Front 71

walls

Back 71

usually located dorsal and lateral to the distal phalanx

Front 72

sole

Back 72

located ventral to the distal phalanx and usually is flaky

Front 73

foot pads

(or tori)

Back 73

--provide cushioning and protection for the bones of the foot

--pads are usually thick and composed of keratinized epithelium

--the pad has a subcutaneous layer that contains a large number of adipose cells and elastic connective tissue

--sweat glands are found in most mammalian foot pads

Front 74

digital pads

Back 74

pads that dogs and cats have on the palmar and plantar surfaces of the phalanges

Front 75

metacarpal and metatarsal pads

Back 75

singular pads located on the palmar and plantar surfaces of the metacarpal and metatarsal areas, respectively

Front 76

carpal pads

Back 76

--located on the palmar surface of each carpus

--do not bear weight when the animal is standing

Front 77

digitigrade

Back 77

dogs and cats are called this because they walk on their toes (digits), with only the digital and metacarpal and metatarsal pads making contact with the ground

Front 78

plantigrade

Back 78

--animals that have well-developed foot pads, such as those in primates

--they walk with phalanges, metacarpals, and metatarsals, and carpal and tarsal bones making contact with the ground

Front 79

-grade

Back 79

suffix meaning to go

Front 80

nails and claws (in dogs and cats)

Back 80

--keratin plates covering the dorsal surface of the distal phalanx

--the dorsal and lateral surface of the claw is covered by the wall

--the ventral surface is the sole

Front 81

quick

Back 81

connective tissue dermis beneath the wall and sole, which contains numerous blood vessels and nerve endings

Front 82

quicking

Back 82

--the term used to describe trimming the nail or claw to the level of the dermis

--results in bleeding and pain

Front 83

onych/o

Back 83

claw

Front 84

hooves

Back 84

--the horny covering of the distal phalanx in ungulates or hooved animals, such as equine, ruminants, and swine

--some have a solid hoof, like equine

--some have cloven or split hooves, like ruminants and swine

--the ventral surface is the sole, which is large in equine and smaller in ruminants and swine

Front 85

ungul/o

Back 85

hoof

Front 86

pads of ungulates

Back 86

--in ruminants and swine, the foot pad is called the bulb or heel

--in equine, it is called the frog and along with the bulb provides shock absorption

Front 87

corium

Back 87

--the dermis of the hoof and is located under the epidermal surface of the hoof wall, sole, and frog

--corresponds to the quick

Front 88

fur

Back 88

short, fine, soft hair

Front 89

pelt

Back 89

skin in addition to fur or hair

Front 90

guard hairs

(or primary hairs or topcoat)

Back 90

--long, straight, stiff hairs that form the outer coat

--incudes tail and mane hair, bristly hair of swine, and most of the fur hair

Front 91

secondary hairs

(or undercoat)

Back 91

--finer, softer, and wavy hair

--includes wool and wavy hair located near the skin of rabbits

Front 92

tactile hair

(or vibrissae)

Back 92

long, brittle, extremely sensitive hairs usually located on the face

Front 93

vibrissae

Back 93

technically longer than tactile hairs like cat whiskers

Front 94

cilia

Back 94

thin, short hairs like eyelashes

Front 95

simple pattern hair growth

Back 95

guard hairs that grow from separate follicular openings, as in cattle

Front 96

compound pattern hair growth

Back 96

multiple guard hairs that grow from single follicles, as in dogs

Front 97

shedding

Back 97

normal hair loss caused by temperature, hormones, photoperiod (light), nutrition, and other nondisease cuases

Front 98

coronary band (equine hoof)

(or coronet)

Back 98

region where hoof meets the skin; analogous to the cuticle of the human nail; the site of hoof wall growth

Front 99

periople (equine hoof)

Back 99

flaky tissue band located at the junction of the coronary band and the hoof wall and extends distally; it widens a the heel to cover the bulbs of the heels

Front 100

wall (equine hoof)

Back 100

epidermal tissue that includes the toe (front), quarters (sides), and heels (back)

Front 101

bars (equine hoof)

Back 101

raised V-shaped structure on the ventral surface of hoof; bars are located on either side of the frog

Front 102

sole (equine hoof)

Back 102

softer hoof tissue located on the ventral surface of the hoof (bottom of the hoof)

Front 103

frog (equine hoof)

Back 103

V-shaped pad of soft horn located in the central region of the ventral hoof surface of equine (located between the bars); when weight is put on the frog, blood is forced out of the foot to promote circulation of blood throughout the foot

Front 104

bulbs of heel (equine hoof)

Back 104

upward thickening of the frog above the heels of the wall

Front 105

vestigial, or rudimentary, structures of the integumentary system include:

Back 105

--dewclaws

--chestnuts

--ergots

Front 106

dewclaws

Back 106

--rudimentary bones

--in dogs, the first digit; usually found in the forepaw, but occasionally seen in the hindpaw

--in cloven-hooved animals, digits II and V

Front 107

chestnuts

Back 107

--vestigial pads in equine

--located on the medial surface of the leg

--in the front leg, they are above the knee

--in the hind leg, they are below the hock

--they correspond to carpal pads in the dog

--no two chestnuts are alike and do not change in size or shape throughout an equine's life

Front 108

ergots

Back 108

--vestigial pads in equine

--located in a tuft of hair on the fetlock joint

--correspond to metacarpal and metatarsal pads in the dog

Front 109

horns

Back 109

--permanent structures that grow continuously after birth

--they grow from the frontal skull bones and originate from keratinized epithelium

Front 110

cornification

Back 110

the conversion of epithelium into keratin or horn

Front 111

polled

Back 111

breeds that are hornless

Front 112

antlers

Back 112

--not permanent structures and are shed and regrown annually

--they grow from the skull

--initially are covered with skin called velvet, which the animal rubs off after the skin dies

--after the velvet is rubbed off, the bone is exposed, the antlers lose their blood supply and are eventually shed

Front 113

biopsy

Back 113

removal of living tissue for examination of life

Front 114

bi/o

Back 114

life

Front 115

-opsy

Back 115

suffix meaning view of

Front 116

incisional biopsy

Back 116

the removal of a piece of tumor or lesion for examination

Front 117

incision

Back 117

a cut into tissue

Front 118

excisional biopsy

Back 118

the removal of an entire tumor or lesion in addition to a margin of surrounding tissue for examination

Front 119

excision

Back 119

a cut out of tissue

Front 120

needle biopsy

Back 120

the insertion of a sharp instrument (needle) into a tissue for examination

Front 121

culture

Back 121

diagnostic or research procedure used to allow microbes to reproduce in predetermined media (nutrient source)

Front 122

fungal and bacterial culture

Back 122

are performed using media that contains specific nutrients necessary for optimal growth of these types of microbes

Front 123

tissue culture

Back 123

takes epithelial cells and grows them in a medium so that intracellular microbes such as viruses can replicate

Front 124

exfoliative cytology

Back 124

scraping of cells from tissue and examination under a microscope

Front 125

exfoliative

Back 125

means falling off

Front 126

intradermal skin testing

Back 126

injection of test substances into the skin layer to observe a reaction; used for diagnosis of atopy with the injection of multiple allergens or for tuberculosis testing by injecting tuberculin into the skin layer and observing the injection site for a 24-, 36-, and 72- hour postinjectino reaction

Front 127

purified protein derivative (PPD)

Back 127

tuberculosis testing

Front 128

skin scrape

Back 128

microscopic examination of skin for the presence of mites; skin is sampled by scraping a scalpel blade across an area that is squeezed or raised so that the sample contains a deep skin sample

Front 129

abrasion

Back 129

injury in which superficial layers of skin are scraped

Front 130

abscess

Back 130

localized collection of pus; the fluid from an abscess may be described as caseous or cheese-like

Front 131

acne

Back 131

skin inflammation caused by plugged sebaceous glands and comedone development from papules an dpustules

Front 132

chin acne

Back 132

common condition in cats in which acne develops on the chin and lip area

Front 133

acute moist dermatitis

(or hot spot)

Back 133

bacterial skin disease that is worsened by licking and scratching

Front 134

alopecia

Back 134

hair loss resulting in hairless patches or complete lack of hair

Front 135

alopec/o

Back 135

baldness

Front 136

shedding

Back 136

normal hair loss due to various causes

Front 137

atopy

Back 137

hypersensitivity reaction in animals involving pruritus with secondary dermatitis; commonly called allergies or allergic dermatitis

Front 138

hypersensitization

Back 138

an increased response to an allergen

Front 139

hyposensitization

Back 139

a decreased response to an allergen; animals with atopy may undergo a series of hyposensitization injections to decrease their response to a specific allergen

Front 140

bullae

(singular is bulla)

Back 140

multiple contained skin elevations filled with fluid that are greater the 0.5 cm in diameter

Front 141

burn

Back 141

tissue injury caused by heat, flame, electricity, chemicals, or radiation

Front 142

carbuncle

Back 142

cluster of furuncles

Front 143

carcinoma

Back 143

malignant neoplasm of epithelial tissue

Front 144

carcin/o

Back 144

cancerous

Front 145

cellulitis

Back 145

inflammation of connective tissue; the inflammation by be diffuse (widespread) or localized (within a well-defined area)

Front 146

comedo

(plural is comedones)

Back 146

blackhead or buildup of sebum and keratin I a pore

Front 147

contusion

Back 147

injury that does not break the skin; characterized by pain, swelling, and discoloration

Front 148

crust

Back 148

collection of dried sebum and cellular debris

Front 149

cyst

Back 149

closed sac or pouch containing fluid or semisolid material

Front 150

dermatitis

Back 150

inflammation of the skin

Front 151

contact dermatitis

Back 151

inflammation of the skin caused by touching an irritant

Front 152

dermatocellulitis

Back 152

inflammation of the skin and connective tissue

Front 153

dermatomycosis

Back 153

abnormal skin condition caused by superficial; also called dermatophytosis

Front 154

dermatophytes

Back 154

superficial fungi that are found on the skin

example: the fungus that causes ringworm

Front 155

dermatosis

(plural is dermatoses)

Back 155

abnormal skin condition

Front 156

discoid lupus erythematosus

Back 156

canine autoimmune disease in which the bridge of the nose (and sometimes the face and lips) exhibit depigmentation, erythema, scaling, and erosions; abbreviated DLE; may have been called collie nose or solar dermatitis in the past

Front 157

dyskeratosis

Back 157

abnormal alteration in keratinization

Front 158

ecchymosis

(plural is ecchymoses)

Back 158

purplish nonelevated patch of bleeding into the skin; also called a bruise

Front 159

eccthyma

Back 159

skin infection with shallow eruptions caused by a pox virus; also known as soremouth

Front 160

eczema

Back 160

general term for inflammatory skin disease characterized by erythema, papules, vesicles, crusts, and scabs either alone or in combination

Front 161

eosinophilic granuloma complex

Back 161

--collective name for autoimmune lesion of eosinophilic ulcer, eosinophilic plaque, and linear granuloma found in cats and rarely in dogs

--this complex of deseases affects the skin, mucocutaneous junctions, and oral mucosa of cats, involving raised, ulcerated plaques

Front 162

eosinophilic ulcer

(or rodent ulcer)

Back 162

located on the lip and oral mucosa of cats

Front 163

eosinophilic plaques

Back 163

raised pruritic lesions on the ventral abdomen of cats

Front 164

linear granulomas

Back 164

located in a line usually on the caudal aspect of the hindlimb of cats

Front 165

erythema

Back 165

skin redness

Front 166

erythematous

Back 166

pertaining to redness

Front 167

eyrthroderma

Back 167

abnormal redness of skin occurring over a widespread area

Front 168

erythr/o

erythema/o

erythemat/o

Back 168

red

Front 169

exanthema

(singular is exanthem)

Back 169

cutaneous rash caused by fever or disease

Front 170

excoriation

Back 170

skin surface injury caused by self-trauma

Front 171

feline miliary dermatitis

Back 171

skin disease of cats in which multiple crusts and bumps are present predominantly on the dorsum; the disease can be associated with many causes

Front 172

fissure

Back 172

cracklike sore

Front 173

fistula

(plural is fistulae)

Back 173

abnormal passage from an internal organ to the body surface or between two internal organs

Front 174

fistul/o

Back 174

tube or pipe

Front 175

flea allergy dermatitis

Back 175

inflammation of the skin caused by an allergic reaction to flea saliva; abbreviated FAD

Front 176

allergen

Back 176

a substance that produces an allergic response

Front 177

footrot

Back 177

bacterial (Fusobacterium sp.) hoof disease that spreads from the interdigital skin to the deeper foot structures

Front 178

frostbite

Back 178

tissue damage caused by extreme cold or contact with chemicals with extreme temperature (e.g., liquid nitrogen)

Front 179

furuncle

Back 179

localized skin infection in a gland or hair follicle; also called a boil

Front 180

furunculosis

Back 180

the abnormal condition of persistent boils over a period of time

Front 181

gangrene

Back 181

necrosis associated with loss of circulation

Front 182

necrosis

Back 182

condition of dead tissue

Front 183

necrotic

Back 183

pertaining to dead tissue

Front 184

putrefaction

Back 184

decay that produces a foul smell

Front 185

granuloma

Back 185

small area of healing tissue

Front 186

hemangioma

Back 186

benign tumor composed of newly formed blood vessels

Front 187

hyperkeratosis

Back 187

abnormal condition of increased growth of the horny layer of the skin; also called acanthokeratodermia

Front 188

infestations

Back 188

occupation and dwelling of a parasite on the external surface of tissue

Front 189

ectoparasites

Back 189

live on the external surface

Front 190

ecto-

Back 190

means outside

Front 191

louse

(plural is lice)

Back 191

a wingless parasitic insect

Front 192

pediculosis

Back 192

lice infestation

Front 193

mite

Back 193

an insect with a hard exoskeleton and paired, jointed legs

Front 194

mange

Back 194

a common term for skin disease caused by mites; different types like sarcoptic or demodectic depending on the type of mite involved

Front 195

chiggers

Back 195

infestation by mite larvae that results in severe pruritus

Front 196

acariasis

Back 196

infestation with ticks or mites

Front 197

maggots

Back 197

insect larvae found especially in dead or decaying tissue

Front 198

myiasis

Back 198

infestation by fly larvae

Front 199

keratosis

(plural is keratosis)

Back 199

abnormal condition of epidermal overgrowth and thicken

Front 200

laceration

Back 200

accidental cut into the skin

Front 201

lesion

Back 201

pathologic change of tissue; used to describe abnormalities in many locations

Front 202

lipoma

Back 202

benign growth of fat cells; also called fatty tumor; commonly seen in older dogs

Front 203

macule

Back 203

flat, discolored lesion less than 1 cm in diameter; also called macula

Front 204

melanoma

Back 204

tumor or growth of pigmented skin cells

Front 205

malignant melanoma

Back 205

the term used to describe cancer of the pigmented skin cells

Front 206

amelanotic melanoma

Back 206

an unpigmented malignant melanoma

Front 207

nodule

Back 207

small knot protruding above the skin

Front 208

onychomycosis

Back 208

superficial fungal infection of the claw

Front 209

pallor

Back 209

skin paleness

Front 210

papilloma

Back 210

benign epithelial growth that is lobed

Front 211

papill/o

papill/i

Back 211

nipplelike

Front 212

papule

Back 212

small, raised skin lesion less than 0.5 cm in diameter

Front 213

parakeratosis

Back 213

lesion characterized by thick scales, cracking, and red raw surface caused by the persistence of keratinocyte nuclei in the horny layer of skin

Front 214

paronychia

Back 214

bacterial or viral infection of the claw

Front 215

patch

Back 215

localized skin color change greater than 1 cm in diameter

Front 216

pemphigus

Back 216

group of immune mediated skin diseases characterized by vesicles, bullae, and ulcers

Front 217

phigus vulgaris

Back 217

consists of shallow ulcerations frequently involving th eoral mucosa and mucocutaneous junctions

Front 218

petechiae

(singular is petechial)

Back 218

small, pinpoint hemorrhages

Front 219

plaque

Back 219

solid raised lesion greater than 0.5 cm in diameter

Front 220

pododermatitis

Back 220

foot infection in animals, particularly birds (from walking on hard surfaces), small mammals, or rodents (from standing on wire or mesh flooring that has not been recently cleaned); also called bumblefoot or sore hocks

Front 221

polyp

Back 221

growth from mucous membranes

Front 222

pruritus

Back 222

itching

Front 223

purpura

Back 223

condition characterized by hemorrhage into the skin that causes bruising; the two types of purpura are ecchymosis and petechia

Front 224

pustule

Back 224

small, circumscribed, pus-filled skin elevation

Front 225

circumscribed

Back 225

means contained in a limited area

Front 226

pyoderma

Back 226

skin disease containing pus

Front 227

py/o

Back 227

pus

Front 228

pus

Back 228

an inflammatory product made up of leukocytes, cell debris, and fluid

Front 229

purulent

Back 229

means containing or producing pus

Front 230

puppy pyoderma

Back 230

a skin disease in puppies characterized by pus-containing lesions

Front 231

juvenile pyoderma

Back 231

a skin disease in puppies that progresses to a systemic disease characterized by fever, anorexia, and enlarged and abscessing lymph nodes; also called puppy strangles

Front 232

sarcoma

Back 232

malignant neoplasm of soft tissue arising from connective tissue

Front 233

sarc/o

Back 233

flesh (connective tissue) or malignancy of connective tissue

Front 234

scale

Back 234

flake

Front 235

scar

Back 235

mark left by a healing lesion where excess collagen was produced to replace injured tissue; also called cicatrix or cicatrices, which are multiple scars

Front 236

sebaceous cyst

Back 236

closed sac of yellow fatty material

Front 237

seborrhea

Back 237

skin condition characterized by overproduction of sebum (oil)

Front 238

skin tag

Back 238

small growth that hangs from the body by stalks

Front 239

ulcer

Back 239

erosion of skin or mucous membrane

Front 240

decubital ulcers

Back 240

erosions of skin or mucous membranes as a result of prolonged pressure; also called bedsores

Front 241

urticaria

Back 241

localized areas of swelling that itch; also called hives

Front 242

verrucae

Back 242

warts

Front 243

vesicle

Back 243

contained skin elevation filled with fluid that is greater than 0.5 cm in diameter; also called a blister, bulla, or bleb

Front 244

wheal

Back 244

smooth, slightly raised swollen area that itches

Front 245

cauterization

Back 245

destruction of tissue using electric current, heat, or chemicals

Front 246

cryosurgery

Back 246

destruction of tissue using extreme cold

Front 247

debridement

Back 247

removal of tissue and foreign material to aid healing

Front 248

lance

Back 248

to open or pierce with a lancet (scalpel blade) to allow drainage; abscesses are lanced to drain the pus present in an area

Front 249

laser

Back 249

device that transfers light into an intense beam for various purposes; acronym for light amplification by stimulated emission of radiation

Front 250

bx

Back 250

biopsy

Front 251

DLE

Back 251

discoid lupus erythematosus

Front 252

FAD

Back 252

flea allergy dermatitis

Front 253

ID

Back 253

intradermal

Front 254

PPD

Back 254

purified protein derivative

Front 255

SLE

Back 255

systemic lupus erythematosus

Front 256

SQ

SC

subq

subcu

Back 256

subcutaneous