Introduction to Dermatology:Structure and function of the skin

Question 1

macule vs patch

Answer 1

Macule = Small flat circumscribed area
Patch = Larger flat circumscribed area

usually no change in texture

Question 2

papule vs plaque

Answer 2

Papule = Small raised area- under 1cm
Plaque = Larger Raised area- over 1cm

Question 3

vesicle vs bulla

Answer 3

Vesicle = Small Fluid filled- less than 1cm
Bulla = Large Fluid filled- more than 1cm

Question 4

pustule vs absess

Answer 4

Pustule = Small Pus filled
Abscess = Large Pus filled

Question 5

erosion vs ulcer

Answer 5

Erosion = Loss of Epidermis
Ulcer = Loss of Epidermis and dermis

Question 6

nodule

Answer 6

like plaque- palpable over 1cm
but taller than wide

Question 7

investigation for bacteria

Answer 7

charcoal swap

Question 8

test for fungal infections x3

Answer 8

*Skin scraping
*Nail clipping
*Hair sample

Question 9

name the different layers of the epidermis

Answer 9

dark green = stratum basal
light green = stratum spinosum
light blue = stratum granulosum
medium blue = stratum lucidum
dark blue = stratum corneum

Question 10

what are the dark and light purple bits

Answer 10

dark = desmosomes
light = hemidesmosomes

Question 11

3 stages of hair growth

Answer 11

*Anagen–active growing phase

*Catagen– growth stops/follicle shrinks

*Telogen–resting phase

Question 12

name the parts of the nail

Answer 12

purple = hyponychium
yellow = lateral nail fold
grey = lanula
red = proximal nail fold
blue = nail matrix