And Answers 2025
Skin Facts - correct answers ✅✅-Size: 2 square meters
-Weight: 15% TBW
-Recieves 1/3 of total circulation.
-Largest Organ
Skin Functions - correct answers ✅✅-Thermoregulation
-Protection
-Immunity
-Sensation
-Metabolism
-Communication
Epidermal Appendages (Skin) - correct answers ✅✅-Nails
-Hair Follicles
-Sweat glands
Epidermis (Layers--superficial to deep) - correct answers ✅✅-
Stratum corneum
-stratum lucidum
-stratum granulosum
,Wound Care Exam 1 (1st half) Question
And Answers 2025
stratum spinosum
-stratum basle
Epidermis - correct answers ✅✅-Outermost layer
-uniform thickness (except palms/soles = 0.06-0.6 mm)
-Stratified squamos epithelial cells ( 20 cells thick; Very young/old
have only 12)--> leads to more wounds
-5 Layers
Stratum Corneum - correct answers ✅✅-Top horny Layer
-cells elongate
-dead keratinized cells
-sloughs off and is replaced by cells below
Stratum Lucidum - correct answers ✅✅-Few Layers of dead
keratinocytes
Stratum Granulosum - correct answers ✅✅-3-5 layers of cells
-Diamond Shaped Cells
Stratum Spinosum - correct answers ✅✅-Prickly Layer
-Cells have active nuclei
,Wound Care Exam 1 (1st half) Question
And Answers 2025
Stratum Basale - correct answers ✅✅-AKA- Basal Layer (Stratum
Germinativum)
-Attached to dermis by basement membrane
-Takes 2-4 weeks to migrate upward
-Melanocytes
Basement Membrane - correct answers ✅✅-Separates epidermis
from dermis
-Rete pegs - point up
-Rete ridges - point down
-Ancer epidermis to dermis
-Flattens with age (leads to ski tears)
Langerhans Cells - correct answers ✅✅-Produced in bone
marrow
-migrate to epidermis
-Fight bacteria and viral fungal infection
-Decrease with Age and UV exposure --> decrease immune
function
Papillary Dermis - correct answers ✅✅-Layer just below the
basement membrane
-Elastic Fibers
-Papillary loops provide nutrients to dermis
, Wound Care Exam 1 (1st half) Question
And Answers 2025
Reticular Dermis - correct answers ✅✅-Forms base of dermis
-Thick collagen fibers
-Cutaneous blood vessels
Important Dermal Cells - correct answers ✅✅-Fibroblasts
-Macrophages
-Mast Cells
-Nerve Cells
-Epidermal Appendages
Fibroblasts (dermal cells) - correct answers ✅✅-produce collage
and elastin
-important for elasticity in would healing
Macrophages and WBC (dermal cells) - correct answers ✅✅-
Regulate Wound Repair process (fight infection)
-Phagocytize bacteria
-break down damage tissue
-synthesize collagenase and elastase (enzymes that break down
dead tissue)
Mast Cells (dermal cells) - correct answers ✅✅-produce
histamine -->causes vasodialation