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Skin Structure

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A lesson on basic skin structure for cosmetology students.

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Skin Structure

  1. 1. Skin Structure<br />Ms. SmithSkin Care<br />
  2. 2. Introduction<br /><ul><li>Skin Facts
  3. 3. Skin care is a multi-billion dollar business.
  4. 4. Skin is the largest organ of the human body. (Average adult’s skin = 8 pounds and covers 22 square feet.)
  5. 5. The skin has many important functions.
  6. 6. We lose about 50 million skin cells a day!</li></li></ul><li>Objectives<br /><ul><li>Objectives
  7. 7. List the functions of the skin.
  8. 8. Describe the structure and composition of the skin.
  9. 9. Define important terms relating to the skin.
  10. 10. Assessments
  11. 11. Written – Test on Friday
  12. 12. Practical – Facial exchange on Thursday </li></li></ul><li>Word List<br /><ul><li>Dermatology
  13. 13. Dermatologist
  14. 14. Esthetician
  15. 15. Dermis
  16. 16. Epidermis
  17. 17. Stratum Layers (5)
  18. 18. Adipose Tissue
  19. 19. Reticular Layer
  20. 20. Body Temperature
  21. 21. Papillary Layer
  22. 22. Subcutaneous tissue
  23. 23. Sweat gland
  24. 24. Sebaceous gland
  25. 25. Sebum
  26. 26. Follicle
  27. 27. Collagen and Elastin Fibers</li></li></ul><li>Dermatology<br /><ul><li>The study of skin
  28. 28. Dermatologist vs. Esthetician</li></li></ul><li>Functions of Skin<br /><ul><li>Protection
  29. 29. Sensation
  30. 30. Heat regulation
  31. 31. Excretion
  32. 32. Secretion
  33. 33. Absorption</li></li></ul><li>Three Main Layers<br /><ul><li>Epidermis
  34. 34. Dermis
  35. 35. Subcutaneous</li></li></ul><li>Subcutaneous<br /><ul><li>Fatty layer, also called adipose
  36. 36. Bottom most layer of the skin
  37. 37. Varies in thickness
  38. 38. Gives smoothness and contour to the body
  39. 39. Energy source
  40. 40. Protective cushion for the outer skin</li></li></ul><li>Dermis<br /><ul><li>Above subcutaneous layer
  41. 41. Sensitive layer of connective tissue that contains:
  42. 42. Blood vessels
  43. 43. Lymph vessels
  44. 44. Nerves
  45. 45. Sudoriferous glands - sweat
  46. 46. Sebaceous glands - oil
  47. 47. Hair follicles
  48. 48. Arrectorpili muscles
  49. 49. papillae
  50. 50. Two layers
  51. 51. Reticular layer(deeper layer)
  52. 52. Papillary layer (dermal papillae, tactile corpuscles, melanin)
  53. 53. Collagen fibers and elastin
  54. 54. Allow skin to stretch and contract as necessary
  55. 55. Weakened fibers = wrinkles, sagging, cellulite</li></li></ul><li>Epidermis<br /><ul><li>Outermost layer (also called cuticle)
  56. 56. No blood vessels
  57. 57. Small nerve endings
  58. 58. 5 layers
  59. 59. Stratum corneum
  60. 60. Stratum lucidum
  61. 61. Stratum granulosum
  62. 62. Stratum spinosum
  63. 63. Stratum basale</li></li></ul><li>Structure of the Skin<br />
  64. 64. Questions/Discussions<br /><ul><li>What gives skin its color?
  65. 65. What gives skin its strength, form, and flexibility?
  66. 66. Name the 3 main layers of the skin.
  67. 67. Name the 5 layers of the epidermis from top to bottom.</li>

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