3 Flashcards
How long is the average life of keratinocytes
14-28 days
25-45 days
7-14 days
36-90 days
25-45 days
what cell is stimulated by the hormone epidermal growth factor
melanocytes
macrophages
carotene
keratinocytes
keratinocytes
melanin is generated by the
melanocytes
phagocytes
keratinocytes
macrophages
melanocytes
dendritic cell are also known as
macrophages
connective tissue
fibroblasts
lunula
macrophages
macrophages have migrated from
the brain
the heart
bone marrow
dermis
bone marrow
what is the top layer of the epidermis
stratum lucidum
stratum corneum
stratum granulosum
stratum spinosum
stratum corneum
which cells are flat and anucleated
stratum spinosum
stratum granulosum
dermis
stratum corneum
stratum corneum
what layer is 2-3 rows of clear, flat, dead keratinocytes that is found only in thick skin of soles of feet and palms of hands
melanosomes
subcutaneous tissue
stratum basale
stratum lucidum
stratum lucidum
place the layers in order of most superficial to least
1) stratum lucidum
2)stratum basale
3) stratum corneum
4) stratum spinosum
5) stratum granulosum
a) 1, 3, 4, 5, 2
b) 3, 1, 5, 4, 2
c) 3, 1, 4, 5, 2
d) 1, 5, 3, 2, 4
b) 3, 1, 5, 4, 2
where does the protein keratin accumulate
papillary layer
stratum granulosum
stratum basale
superficial fascia
stratum granulosum
stratum basale is the mid layer that renews keratinocytes for the overlying epidermis
T or F
F
its the deepest layer
what cell secretes collagen proteins that are used to maintain a structural framework
dermal papillae
macrophages
phagocytes
fibroblasts
fibroblasts
mast cells respond to infection by releasing histamines which causes
vasoconstriction
sweating
vasodilation
folds in the skin
vasodilation
which is not included in the matrix
lacunae
collagen
reticular fibers
elaston
lacunae
when the dermis is stretched you are left with
flexure lines
blisters
friction ridges
stretch marks
stretch marks
what is another name for stretch marks
histamines
flexure lines
stria
lunala
stria
what layer is superficial thin containing areolar CT forming dermal papillae containing blood vessels and sensory nerves. They also form friction ridges (hand and toe prints)
dermal layer
basal layer
stratum granulosum
papillary layer
papillary layer
what layer would you cut for less scaring that contains dense irregular CT
reticular layer
basal layer
stratum granulosum
papillary layer
reticular layer
what is another name for subcutaneous tissue
adipose tissue
reticular layer
superficial fascia
aerolar CT
superficial fascia
which is not apart of the accessory structure of the integument
nails
hair
stria
arrector pili muscle
stria
where is the nail derived from
nail matrix
nail bed
phalanx
hyponychium
nail matrix
what part of your nail serves as a barrier for germs
lunula
hyponychium
nail root
free edge of nail
hyponychium
a thickened yellow nail suggests
malnutrition
thyroid disorder
fungal infection
iron deficiency
fungal infection
beau lines suggest
malnutrition
thyroid disorder or respiratory illness
fungal infection
iron deficiency
malnutrition
spoon shaped nails suggest
malnutrition
thyroid disorder or respiratory illness
fungal infection
iron deficiency
iron deficiency
terminal hair is covering most of the body
T or F
F
terminal hair is not found on
armpits
face
arms
scalp
pubic area
arms
Name the 3 layers of hair in order (cuticle, medulla, cortex) from inner to outer
medulla,cortex, cuticle
a person with an oval shaft has
straight hair
ginger hair
curly hair
split ends
straight hair
where does the hair grow from
shaft
bulb
root
bulb
which is not apart of hair follicle
external epithelial root
arrector pili
internal epithelial root
glass membrane
CT root sheet
arrector pili
why does our hair turn white
malnutrition
broken root
dead pigment cell
chemical damage
dead pigment cell
modified sweat glands can produce
ear wax and milk
what degree burn would you get if damage was only done to epidermis?
1st degree
when would it be a 2nd degree burn
epidermis and superficial dermis
3rd degree damages the
epidermis and the dermis
