Skin Flashcards
this is the largest organ of the body
skin
the functions of this organ are protection, absorption, containment, heat regulation, and synthesis and storage of vitamin D
skin
this is the most superficial layer of skin
epidermis
these cells produce melanin and are in the epidermis
melanocytes
these cells produce keratin and are located in the epidermis
keratinocytes
papillary ridges
fingerprints
is there blood flow or capillaries in the epidermis?
No
this is the middle layer of skin
dermis
this layer of skin contains hair follicles, sweat glands, sebaceous glands, arrector pili muscles, nails, and capillaries
dermis
these sweat glands are involved in heat regulation and are located in the palms, forehead, and neck
eccrine glands
these sweat glands start to release after puberty and are located in the groin and armpits
apocrine glands
these types of receptors respond to mechanical stimuli such as stroking, stretching, or vibration of skin
mechanoreceptors
these types of receptors respond to cold or hot temperatures
thermoreceptors
these types of receptors respond to certain types of chemicals either applied externally or released within the skin
chemoreceptors
these receptors are involved in the experience of pain and fire specifically to potentially tissue-damaging stimuli
nociceptors
this type of mechanoreceptor responds to pressure and lower frequency vibration in a rapid manner
meissner’s corpuscles
this type of mechanoreceptor detects transient pressure and higher frequency vibrations in a rapid manner
pacinian corpuscles
this type of mechanoreceptor responds to light pressure in a slower manner
merkel’s disks
this type of mechanoreceptor detects stretch in a slower manner
ruffini corpuscles
is sensory information afferent or efferent
afferent
is motor information afferent or efferent
efferent
this refers to a specific segment of skin supplied by a single spinal nerve
dermatomes
this dermatome is the level of the nipples
T4
this dermatome is the level of the umbilicus
T10
this dermatome is the front portion of the calf and includes 4 of the toes
L5
these dermatomes include the perineum
S2,3,4
this is the deepest layer of the skin
hypodermis
this layer of the skin includes adipose tissue, and has blood and lymph vessels
hypodermis/ subcutaneous tissue
this layer of the skin attaches the dermis to muscles and bones
hypodermis/ subcutaneous tissue
this structure is below the skin and connects the skin with the deep fascia
superficial fascia
these are white cords, fibrous tissue made of collagen
tendons
flat or ribbon shaped tendons
aponeuroses
these indicate suture direction
Langer’s lines/ tension lines
this term refers to how well skin comes together with sutures
approximate
this layer of the skin is the most important to approximate
dermis
why is the dermis the most important skin layer to approximate?
it contains the blood supply necessary for healing
the zone of cells that will recover from injury
zone of hyperemia
the zone of cell injury that can either recover or transform into the zone of coagulation
zone of stasis
the zone of cell death
zone of coagulation
true or false- a greater than 20% total body surface area (TBSA) of a second degree requires fluid resuscitation
true
this type of burn has no dermal involvement, is pink and painful, and is edematous (swollen)
superficial burn (previously first degree)
this type of burn heals in about 3-5 days without scarring and may be caused by flame, sun, or a flash from an explosion
superficial burn (previously first degree burn)
this type of burn is in the epidermis and papillary region of the dermis. It’s associated with bullae, serous fluid, edema, and is painful and cherry red moist appearing.
superficial partial thickness (previously superficial second degree burn)
this type of burn heals in 7-28 days with minimal scarring and may be caused by flame, flash, scald, or contact
superficial partial thickness (previously superficial second degree)
this type of burn involves the epidermis and reticular region of the dermis. It is associated with pain, bullae, serous fluid, edema, and is pale ivory moist appearing
deep partial thickness (previously deep second degree)
this type of burn heals in 7-28 days with variable scarring and may be caused by flame, flash, scald, or contact
deep partial thickness (previously deep second degree)
this type of burn extends into subcutaneous tissue, may appear white, yellow, brown, or black, is associated with loss of elasticity, edema, thrombosed vessels, escharotomy, and is painless
full thickness burn (previously third degree)
this type of burn requires grafting
full thickness (previously 3rd degree)
this type of burn may take 2-3 days to show true depth, and may be caused by flame, electricity, chemicals, and is associated with prolonged exposure
full thickness (previously third degree)
this type of burn extends to the muscle and is associated with loss of function, amputation, escharotomy and fasciotomy, and may appear black
fourth degree burn
this type of burn may be caused by prolonged exposure to flame, chemicals, and high voltage
fourth degree burn
this is how to calculate surface area of burns
rule of nine’s
this is a guideline/ formula for fluid resuscitation for burn victims
parkland formula
V= 4 x Kg x % burned (rule of nine’s)
parkland formula: volume of fluid