Medical Issues Vocab #3 Flashcards Preview

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Flashcards in Medical Issues Vocab #3 Deck (60)
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1

integument

the skin
the largest organ of the body

2

epidermis

outermost layer of skin
five layers

3

layers of epidermis

stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum

4

dermis

middle layer of skin
composed of a papillary layer and a reticular layer

5

hypodermis

deepest layer of skin (subcutaneous layer)
made of connective tissue (binds the dermis to the deeper structures) and adipose (insulation and cushioning)

6

stratum basale

consists of a single layer of cuboidal cells that undergo mitosis
contains pigment-producing melanocytes
form the new cells for the skin

7

stratum spinosum

composed of several layers of cells with centrally located, large, oval nuclei and spinelike processes
limited mitosis
provides strength and flexibility to the skin

8

stratum granulosum

composed of one or more layers of granular cells that contain fibers of keratin and shriveled nuclei

9

stratum lucidum

a thin, clear layer found only in the epidermis of the palms of the hands and soles of the feet
adds a layer of protection to the skin

10

stratum corneum

consists of may layers of keratinized, dead cells that are flattened and nonnucleated; cornified

11

primary lesion

physical changes in the skin considered to be caused directly by the disease process

12

secondary lesion

lesions that may evolve from primary lesions, or may be caused by external forces such as scratching, trauma, infection, or the healing process

13

macule

a circumscribed spot up to 1 cm
not palpable
not elevated above or depressed below surrounding skin
hypopigmented, hyerpigmented, or erythematous

14

macule examples

freckles
cafe au lain spots
Mongolian spots

15

papule

bump
palpable and circumscribed
elevated and less than 5 mm in diameter
may be pigmented, erythematous, or flesh-tones

16

papule example

mole (elevated nevus)

17

nodule

lesion similar to a papule
diameter of 5mm to 2 cm
may have a significant palpable dermal component

18

nodule examples

fibroma
xanthoma
intradermal nevi

19

tumor

any mass lesion
generally larger than a nodule
may be either malignant or benign

20

tumor example

lipoma

21

plaque

usually well-circumscribed lesion with large surface area and slight elevation

22

plaque examples

psoriasis
lichen planus

23

wheal

elevation of the skin
smooth surface and sloping borders
usually light pink color
caused by acute areas of edema in the skin
may appear, disappear, or change form abruptly within minutes or hours
size ranges from 3 mm to 20 mm

24

wheal example

mosquito bite

25

vesicle

small blister
up to 5 mm in diameter
fluid collection may be subcorneal
intraepidermal
subepidermal

26

vesicle example

herpes simplex (early stages)

27

bulla

blister larger than 5 mm
fluid may be located at various levels

28

bulla examples

pemphigus
pemphigoid

29

pustule

an elevated, well-circumscribed lesion containing purulent exudates

30

pustule example

acne vulgaris