Quiz 1 Flashcards
What is epidermis primary role?
- protection
- moisture retention
What is the epidermis made of?
dead cells
is avascular
What is the role of the dermis?
- structural integrity
- nutrition/hydration to epidermis
- regulate body temp
Rete peg region
- between epidermal and dermal ridge
- increases SA
- protects against friction
What is in the subcutaneous layer?
- CT
- fat
- Blood vessels
- lymphatics
- nerves
Role of subcutaneous layer
- blood supply
- insulation/cushioning
3 types of wound thickness
- superficial
- partial thickness
- full thickness
Superficial wounds (types)
-involves epidermis
1st burns, stage 1 pressure, contusion
Partial thickness (types)
involves dermis
-abrasion, skin tears, S2 pressure ulcer
2nd burn
Full thickness wound (types)
includes all layers and extends into underlying tissue
-3rd burns, deep wounds into muscle and bone
How do superficial wounds heal?
inflammatory response
How do partial thickness wounds heal?
epithelialization
How do full thickness wounds heal?
-intention/proliferation
Primary intention healing
-edges sutured by surgeon
Secondary intention healing
-contraction and granulation in open thickness
Tertiary intention healing
-deep layers are closed but subcutaneous is left open
How long does inflammatory phase take?
2-24 hours or up to 2 weeks
How long does epithelialization take?
2-4 weeks
How long does proliferative take?
2 weeks to 24 dayrs
What phase of healing does contraction of the wound occur?
Proliferative
Pitting Edema scale
1+ to 4+
4+ = rebounds > 30s
Clear fluid filled blister =
epidermis only
Bloody or brown fluid filled blister =
may involve dermis
Epiboly
-when the wound healing occurs with rolled or curled edges, this is bad
