Chapter 5

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Chapter 5

  1. 1. BIO 2870 Winter 2011 Wayne State University
  2. 2. THE INTEGUMENTARY SYSTEM <ul><li>5-0 INTRODUCTION </li></ul>1/25/2011 BIO 2870
  3. 3. THE INTEGUMENTARY SYSTEM <ul><li>5-0 INTRODUCTION </li></ul><ul><li>COMPONENTS OF INTEGUMENTARY SYSTEM (W/O NAILS) </li></ul>1/25/2011 BIO 2870 CUTANEOUS MEMBRANE (Meissner’s) (Pacinian)
  4. 4. THE INTEGUMENTARY SYSTEM <ul><li>5-1 EPIDERMIS </li></ul><ul><li>CELLS </li></ul><ul><ul><li>KERATINOCYTES </li></ul></ul><ul><ul><li>MELANOCYTES </li></ul></ul><ul><ul><li>LANGERHANS CELLS </li></ul></ul><ul><ul><li>MERKEL CELLS </li></ul></ul><ul><ul><li>BASAL CELLS </li></ul></ul>1/25/2011 BIO 2870 (germinativum) Basal cell
  5. 5. THE INTEGUMENTARY SYSTEM <ul><li>5-1 EPIDERMIS </li></ul><ul><li>LAYERS </li></ul><ul><ul><li>THIN SKIN </li></ul></ul><ul><ul><li>THICK SKIN </li></ul></ul>1/25/2011 BIO 2870
  6. 6. THE INTEGUMENTARY SYSTEM <ul><li>5-1 EPIDERMIS </li></ul><ul><li>LAYERS </li></ul><ul><ul><li>STRATUM BASALE (GERMINATIVUM) </li></ul></ul>1/25/2011 BIO 2870 Dermal papilla Epidermal ridge Basal cell
  7. 7. THE INTEGUMENTARY SYSTEM <ul><li>5-1 EPIDERMIS </li></ul><ul><li>LAYERS </li></ul><ul><ul><li>STRATUM SPINOSUM </li></ul></ul><ul><ul><li>STRATUM GRANULOSUM (KERATINIZATION) </li></ul></ul>1/25/2011 BIO 2870 (Langerhans Cell)
  8. 8. THE INTEGUMENTARY SYSTEM <ul><li>5-1 EPIDERMIS </li></ul><ul><li>LAYERS </li></ul><ul><ul><li>STRATUM LUCIDUM </li></ul></ul><ul><ul><li>STRATUM CORNEUM </li></ul></ul><ul><ul><ul><li>INSENSIBLE PERSPIRATION </li></ul></ul></ul>1/25/2011 BIO 2870
  9. 9. THE INTEGUMENTARY SYSTEM <ul><li>5-2 SKIN PIGMENTATION </li></ul><ul><li>EPIDERMAL PIGMENTATION </li></ul><ul><ul><li>CAROTENE </li></ul></ul><ul><ul><li>MELANIN </li></ul></ul><ul><li>DERMAL PIGMENTATION </li></ul><ul><ul><li>CIRCULATION </li></ul></ul>1/25/2011 BIO 2870
  10. 10. THE INTEGUMENTARY SYSTEM <ul><li>5-3 VITAMIN D3 SYNTHESIS </li></ul>1/25/2011 BIO 2870 (Calcitriol)
  11. 11. THE INTEGUMENTARY SYSTEM <ul><li>5-5 DERMIS </li></ul><ul><li>LAYERS </li></ul><ul><ul><li>PAPILLARY LAYER </li></ul></ul><ul><ul><li>RETICULAR LAYER </li></ul></ul>1/25/2011 BIO 2870
  12. 12. THE INTEGUMENTARY SYSTEM <ul><li>5-5 DERMIS </li></ul><ul><li>STRENGTH AND ELASTICITY </li></ul><ul><ul><li>STRETCH MARKS </li></ul></ul><ul><li>LINES OF CLEAVAGE </li></ul>1/25/2011 BIO 2870
  13. 13. THE INTEGUMENTARY SYSTEM <ul><li>5-5 DERMIS </li></ul><ul><li>DERMAL BLOOD SUPPLY </li></ul><ul><li>INNERVATION OF THE SKIN </li></ul>1/25/2011 BIO 2870
  14. 14. THE INTEGUMENTARY SYSTEM <ul><li>5-6 HYPODERMIS </li></ul><ul><ul><li>STABILIZES THE POSITION OF THE SKIN RELATIVE TO THE UNDERLYING TISSUES, </li></ul></ul><ul><ul><li>WHILE PERMITTING INDEPENDENT MOVEMENT OF THE TWO LAYERS </li></ul></ul><ul><ul><li>ADIPOSE (ENERGY RESERVE, SHOCK ABSORBER AND THERMAL BLANKET) </li></ul></ul><ul><ul><li>SUBCUTANEOUS INJECTION SIGHT </li></ul></ul>1/25/2011 BIO 2870
  15. 15. THE INTEGUMENTARY SYSTEM <ul><li>5-7 HAIR </li></ul><ul><li>STRUCTURE </li></ul><ul><li>FUNCTION </li></ul><ul><li>TYPES </li></ul><ul><ul><li>VELLUS </li></ul></ul><ul><ul><li>TERMINAL </li></ul></ul><ul><li>COLOR </li></ul>1/25/2011 BIO 2870
  16. 16. THE INTEGUMENTARY SYSTEM <ul><li>5-7 HAIR </li></ul><ul><li>GROWTH </li></ul><ul><ul><li>GROWTH (ANAGEN) STAGE </li></ul></ul><ul><ul><li>REGRESSION (CATAGEN) STAGE </li></ul></ul><ul><ul><li>RESTING (TELOGEN) STAGE </li></ul></ul>1/25/2011 BIO 2870
  17. 17. THE INTEGUMENTARY SYSTEM <ul><li>5-8 EXOCRINE GLANDS IN THE SKIN </li></ul><ul><li>SEBACEOUS (OIL) GLANDS </li></ul><ul><ul><li>SEBUM </li></ul></ul>1/25/2011 BIO 2870
  18. 18. THE INTEGUMENTARY SYSTEM <ul><li>5-8 EXOCRINE GLANDS IN THE SKIN </li></ul><ul><li>SWEAT GLANDS/ SUDORIFEROUS GLANDS </li></ul><ul><ul><li>APOCRINE SWEAT GLANDS </li></ul></ul><ul><ul><ul><li>SCENT </li></ul></ul></ul><ul><ul><li>MEROCRINE (ECCRINE) SWEAT GLANDS </li></ul></ul><ul><ul><ul><li>SENSIBLE PERSPIRATION </li></ul></ul></ul><ul><ul><ul><li>COOLING </li></ul></ul></ul><ul><ul><ul><li>EXCRETION </li></ul></ul></ul><ul><ul><ul><li>PROTECTION </li></ul></ul></ul>1/25/2011 BIO 2870
  19. 19. THE INTEGUMENTARY SYSTEM <ul><li>5-9 NAILS </li></ul>1/25/2011 BIO 2870

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