NurseReview.Org - Skin Hair & Nails

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NurseReview.Org - Skin Hair & Nails

  1. 1. Skin, Hair and Nails
  2. 2. Skin <ul><li>2 Layers of Skin </li></ul><ul><ul><li>Outer Epidermis </li></ul></ul><ul><ul><li>Inner supportive Dermis </li></ul></ul><ul><li>3 rd Layer of Subcutaneous Adipose </li></ul>
  3. 3. Epidermis <ul><li>Protective </li></ul><ul><li>Stratified into several zones </li></ul><ul><ul><li>Basal cell layer = forms new skin cells </li></ul></ul><ul><ul><li>Keratin = major ingrediant </li></ul></ul><ul><ul><li>Melanin = # but amt of production varies </li></ul></ul><ul><li>Uniformly thin except on palms and soles </li></ul><ul><li>Avascular </li></ul>
  4. 10. Vesicle, Bulla
  5. 13. Skin Color <ul><li>Melanin </li></ul><ul><li>Carotene pigment </li></ul><ul><li>Vascular beds in the dermis </li></ul><ul><li>Affected by skin thickness & edema </li></ul>
  6. 14. Dermis <ul><li>Supportive layer </li></ul><ul><li>Collagen </li></ul><ul><li>Elastic quality for stretching </li></ul><ul><li>Nerves, sensory receptors, bld. vessels, lymphs </li></ul><ul><li>Epidermis appendages = hair follicles, sebacceous glands, sweat glands embedded in the dermis </li></ul>
  7. 15. Hair <ul><li>Important because? </li></ul><ul><li>Threads of keratin </li></ul><ul><li>2 types </li></ul><ul><ul><li>Vellus hair- over body </li></ul></ul><ul><ul><li>Terminal hair </li></ul></ul>
  8. 16. Glands <ul><li>Sebaceous Glands </li></ul><ul><ul><li>Sebum = protective lipid substance </li></ul></ul><ul><ul><ul><li>Lubricates hair& skin </li></ul></ul></ul><ul><ul><ul><li>prevents water loss </li></ul></ul></ul><ul><ul><ul><li>everywhere but palms & soles </li></ul></ul></ul><ul><li>Sweat Glands </li></ul><ul><ul><li>Eccrine = skin surface- sweat </li></ul></ul><ul><ul><li>Apocrine = thick, milky secretion – axilla, anogenital, nipples, navel. </li></ul></ul>
  9. 17. Nails <ul><li>Keratin </li></ul><ul><li>Color </li></ul><ul><li>Condition </li></ul><ul><li>Shape, Profile sign </li></ul>
  10. 18. Function of Skin <ul><li>Protection </li></ul><ul><li>Prevents penetration </li></ul><ul><li>Perception </li></ul><ul><li>Temperature regulation </li></ul><ul><li>Identification </li></ul><ul><li>Communication </li></ul><ul><li>Wound repair </li></ul>
  11. 19. Function of Skin <ul><li>Absorption & excretion </li></ul><ul><li>Vitamin D – ultraviolet light > cholesterol </li></ul>

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