Wound Care Exam 1 (1st half) Latest Version Graded A+

Wound Care Exam 1 (1st half) Latest Version Graded A+ Skin Facts -Size: 2 square meters -Weight: 15% TBW -Recieves 1/3 of total circulation. -Largest Organ Skin Functions -Thermoregulation -Protection -Immunity -Sensation -Metabolism -Communication Epidermal Appendages (Skin) -Nails -Hair Follicles -Sweat glands Epidermis (Layers--superficial to deep) -Stratum corneum -stratum lucidum -stratum granulosum stratum spinosum -stratum basle Epidermis -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 -Top horny Layer -cells elongate -dead keratinized cells -sloughs off and is replaced by cells below Stratum Lucidum -Few Layers of dead keratinocytes Stratum Granulosum -3-5 layers of cells -Diamond Shaped Cells Stratum Spinosum -Prickly Layer -Cells have active nuclei Stratum Basale -AKA- Basal Layer (Stratum Germinativum) -Attached to dermis by basement membrane -Takes 2-4 weeks to migrate upward