Black Saturday Flashcards
T or F: nerve endings penetrate into the epidermis?
False
Where are stems cells located for regeneration of the epidermis?
Hair follicles
Eschar
A slough or piece of dead tissue that is cast off from the surface of the skin, particularly after a burn injury
1st degree burn
only superificial layers of the epithelium (cornified and granular layers) are affected: skin is painful, red, swollen, and flakey; usually heal without complication
2nd degree burn (superifical)
Deeper layers of epidermis are affected (granular & spinous layers but minimal basal cell layer involvement; pain and tactile receptors remain: heal with minimal scarring 14-17 days)
2nd degree burn (deep)
All of the epidermis, including basal cell layer is affected; pus forms under the necrotic parched sloughing eschar; there is minimal pain; the only germinal cells remaining are deep within the hair follicles (in the dermis); with care these may heal within 3-4 weeks, usually with extensive scarring, grafts often indicated
3rd degree burn
Loss of epidermis and dermis, wounds often appear white or black with eschar formation and no pain; frequently complicated by wound infection and generalised sepsis; extensive scarring occurs and grafting usually required
4th Degree Burns
All skin and some underlying fascia, muscle ligaments and/or bone affected
What are some consequences of third degree burns?
Hypovolaemia, increased capillary permeability, hypoproteinaemia
Above which portion of the body are burns considered lethal?
20%
Acute systemic consequences of burn injuries (name 2)
Shock and dehydration
What percentage of the koala’s body surface is taken up by its trunk (excluding the head)?
40%
A. Basal layer
B. Cornified layer
C. Dermis
D. Granular layer
E. Spinous layer
