skin Flashcards
scar
Excess collagenous fibers
scab
Clot and dried tissue fluid
Lifespan Changes
Melanin production slows
Hair thins
Number of hair follicles decreases
Nail growth becomes impaired
Sensory receptors decline
Body temperature unable to be controlled
Diminished ability to activate Vitamin D
Skin becomes scaly Age spots appear Epidermis thins Dermis becomes reduced Loss of fat Wrinkling Sagging Sebaceous glands secrete less oil
first degree burn
superficial, only epidermis, no scarring
cause of inflammation
Blood vessels in affected tissues dilate, fluids leak onto tissue
sweat gland
eccrine gland
Melanocytes located
stratum basale
Keratinized, lacks blood vessels, stratum corneum
epidermis
Stratified squamous epithelium
epidermis
collagenous and reticular fibers
dermis
areolar, adipose
subcutaneous layer
why is rule of nines important
to see how much fluid was lost and to see ow much fluid needs replaced
what needs to be replaced in severe burn
electrolytes
second degree burn
deep, partial thickness, some dermis affected, fluid escapes=blister
third degree burn
full thickness, burns dermis, epidermis
what happens when temperature goes above or below set point
gaining heat from surroundings, sweating
most active growth region of nail
lunula
brownish-black
eumelanin
yellowish, orangish
pheomelanin
cells hardening
keratinization
granules in dark skin
single, large
granules in light skin
many granules
heat to cooler surroundings
radiation
heat moves into cooler molecules
conduction
continuous circulation of air over a warm surface
convection
fluid evaporation, liquid to gas
evaporation
autograft
same person
alograft
different person
hyerthermia side effects
weakness, irregular pulse, flushed face, headache, nauseousness
hypothermia sude effects
shivering, feeling cold, confusion, lethargy, cardiac failure, organs shut down
hypothermia risk factors
young people’s- underdeveloped nervous system
older people’s-less adipose tissue
primary means of heat loss
radiation(heat to cooler surroundings)
what determines skin color
genetics, environmental factors, size of granules
- dark(single)
- light(many)
cause of baldness
hairs shed form scalp are not replaced
blood oxygen concentration is low
cyanosis
physiological factors that influence skin color
- disease
- carotene(Jaundice)
- cyanosis(blood oxygen concentration is low)
acts as the computer or thermostat to control body temperature homeostasis
hypothalamus
