Integumentary Flashcards
epidermis
stratified squamous epithelium
protects body from micro organisms and water
above vascular dermis
6 layers
part of cutaneous membrane
keratinocytes
water proof
main skin cell
stratified squamous
fast regenerating
layers of epidermis
SUPERFISCAL
stratum corneum-thick
stratum lucidum-only in thick skin
stratum granulosum
stratum spinosom- less mitosis
stratum basal- stem cells, mitosis
DEEP
melanocytes
produces pigment with processes to color keratinocytes
shields nucleus from UV rays
all races have same number but some have more melanin
langerhans cells
network of immune cells
dermis
connective tissue with two parts
papillary dermis (joins with epidermis)- loose areolar
reticular dermis- dense irregular
sweat and hair follicles
cleavage comes from fibers in this layer
vascular
strata papillary/reticular
papillary-loose areolar ( connects to basement membrane)
reticular- dense irregular, deepest dermis layer
cleavage lines
come from fibers and which way they run in the skin
surgery cuts want to go with these lines for smaller scar
hypodermis
adipose
nerves
blood
goose bumps
skin cancer
basal carcinoma- raised nodules, mostly on face
squamous cell carcinoma: raised/pink/patchy
malignant melanoma: brown/black moles, aggressive
ABCDs of self examination
Asymmetry
Borders
Color
Diameter
1st degree burns
epidermis, red/pain
2nd degree burns
to dermis
pain/blister
3rd degree burns
through to muscle
no pain because charred
Rule of Nines
limbs are 54%
body is 36%
head is 9%
