SHNa (1) - 12) Skin, Hair, and Nails Meet Lexi -> L...

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12) Skin, Hair, and Nails Meet Lexi ---> L Meneghini MSN RN CEN                                
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Skin Structure and Function Two layers- the outer highly differentiated epidermis and the inner supportive dermis . Beneath these layers is a third layer , the subcutaneous layer of adipose tissue. EPIDERMIS Epidermis is:
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Skin Melanin : Nourished by vascular bed in the Dermis Skin color is derived from carotene, melanin, and red-purple vascular bed.
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Skin DERMIS : It is the inner supportive layer consisting mostly of connective tissue, or collagen. What else?
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Skin… Subcutaneous Layer Adipose tissue: Fat stores for e________ and p__________.
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Epidermal Appendages Hair : Threads of keratin Mostly for cosmetic reasons Vellus Hair: Fine, faint hair covers most of the body except palms and soles Terminal Hair: Dark, thicker hair on scalp, eyebrows, axillae, pubic area and face and chest in males
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Epidermal Appendages Sebaceous Glands: lubricate and protect Sweat Glands: Cooling system Nails : hard plates of keratin that offer protection
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Functions of Skin Protection Penetration protection Perception Temperature I.D. Communication Repair Absorption/excretion Vitamin D production
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Developmental Considerations Lanugo : Fine downy hair of the newborn Vernix Caseousa : Thick cheesy substance made of sebum and epithelial cells Pregnancy: Hormonal changes= generalized pigment changes linea nigra and facial chloasma. Note striae gravidarum also known as stretch marks
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With aging we have : loss or decrease of elasticity, loss of keratin, sub-cutaneous fat, loss of muscle tone and loss of collagen. These factors make older people vulnerable to injury. Check for elasticity over the abdomen in infants. Why??? Circulation decreases causing senile purpura
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Skin Transcultural Considerations:. Palpation is important with dark skinned people to identify pain/tenderness In African Americans skin cancer less likely Less body odor amongst Asians or Native Americans Hair texture Dry hair = malnutrition
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Subjective Data Previous history. allergies, hives, psoriasis, eczema,
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This note was uploaded on 05/31/2011 for the course NUR 326 taught by Professor Meneghini during the Fall '10 term at St. Xavier.

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SHNa (1) - 12) Skin, Hair, and Nails Meet Lexi -> L...

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