Overview: Integumentary System

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by Kira Parkin16 views·Updated May 28, 2021
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  1. Hi everyone.
  2. We are just going to go over a quick review
  3. of the entire elementary system, which is the skin system
  4. um going through the definition here.
  5. So the Integra memory system is a set of organs
  6. that forms the external covering of the body.
  7. There are three main functions such as protection, thermoregulation and
  8. sensation. There are many layers of the Integra memory system,
  9. starting with the epidermis, which is the outermost layer.
  10. This provides the barrier and creates our skin tone.
  11. Then we have our dermis which is the thick layer
  12. below the epidermis which contains blood, capillaries, nerves, sweat glands
  13. and hair follicles.
  14. Below that it is the hypodermic East which connects to
  15. the underlying bone and fashion muscle.
  16. So in this infographic you can see here this is
  17. our integer memory system with our three layers are hypo
  18. dermis which connects to the bone and the tissue.
  19. Our dermis, which is our middle layer that called that
  20. collects all of the capillaries and the epidermis, which is
  21. our top layer, which forms a barrier to help protect
  22. us. So in going over the layers of the epidermis
  23. there are five liars.
  24. The bottom layer which is called basil Stratis by no
  25. some, the straggler Angeles, um the stratum loose idiom and
  26. then the top layer which is the stratum corny.
  27. Um So right here when we break up that epidermis,
  28. we can see here that there's the basil layer, the
  29. spine ist layer, the granular cell layer and then the
  30. top the stratum corne.
  31. Um um And we can see here all the important
  32. cells that make up the epidermis which will go over
  33. next. So as we were talking about the epidermis, we
  34. can go over some of the important cells that you
  35. might be familiar with.
  36. This is the first one is the Merkel cell.
  37. This is important for proper proper neural encoding of light
  38. touch and stimuli.
  39. This is found below the epidermis and contains small nerve
  40. endings. So this is actually what's responsible for our touch
  41. stimuli. We have the correct insights um which are responsible
  42. for forming an epidermal water barrier by making and creating
  43. lipids um and they secrete keratin.
  44. Then we have our melanocytes which is located in the
  45. skin and our eyes and contain melanin.
  46. Um This helps us get our skin tone in our
  47. eye color.
  48. Then we have the Langerhans cells which are tissue resident
  49. macrophages that form cells across the epidermis and have a
  50. key role in immune sentinels.
  51. The last important cell is the sweat gland.
  52. These are small glands that secrete sweat.
  53. This function is to keep our core body temperature stable.
  54. So going back to our epidermis picture, we can see
  55. here that we have our carotene insights at the very
  56. top layer um of our skin.
  57. We have our Granules are Langerhans cells that kind of
  58. look like spiders here in our spine.
  59. Ist layer are carotenoids sites which surround the Langerhans cells.
  60. The melanin and milana sites are merkel cells deep below
  61. the basal layer, and then our bottom basil layer, you
  62. can see kind of where all of those cells are
  63. located um And where they're located is what kind of
  64. their function is.
  65. So there are few paediatric considerations um that we should
  66. consider when we're talking about the difference between our skin
  67. assessment in adults versus Children.
  68. So the an atomic and physiologic differences are is that
  69. Children's they have larger and heavier heads.
  70. As compared to the adult, they have thinner skin.
  71. Children have a lot more thin skinned than adults do.
  72. They have more rapidly dividing cells.
  73. Children's cells divide more rapidly than adults, whereas adults have
  74. normal cell division, infants have no tears in early infancy.
  75. Um And obviously adults have tear formation.
  76. Um and then most of the time that pediatrics will
  77. not have voluntary control over the environmental activity.
  78. So depending on, you know, how their parents dressed them
  79. is how they're dressed.
  80. So um you know, they are kind of whatever the
  81. adult puts them in the situation, that's what they're in.
  82. Whereas adults have control over their body and their skin,
  83. so I want to go over a quick uh who
  84. review. Um and we can answer the following questions.