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3.05 Remember the structures of the Integumentary System

3.05 Remember the structures of the Integumentary System. Essential Questions. What are the structures of the integumentary system?. Structures of the integumentary s ystem. Layers of the integumentary system Epidermis Dermis Subcutaneous .

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3.05 Remember the structures of the Integumentary System

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  1. 3.05 Remember the structures of the Integumentary System

  2. Essential Questions What are the structures of the integumentary system? 3.05 Remember the structures of the integumentary system

  3. Structures of the integumentary system Layers of the integumentary system • Epidermis • Dermis • Subcutaneous About the size of a shower curtain in an adult. 3.05 Remember the structures of the integumentary system

  4. Structures of the integumentary system Epidermis • Outermost covering • Made of epithelial cells • Avascular 3.05 Remember the structures of the integumentary system

  5. Structures of the integumentary system Dermis • True skin • Made of connective tissue • Vascular 3.05 Remember the structures of the integumentary system

  6. Structures of the integumentary system Dermis contains many structures (organs) • Connective tissue • Collagen tissue bands • Elastic fibers • Numerous blood vessels • Nerve endings • Muscles • Hair follicles • Oil glands • Sweat glands • Fat cells subcutaneous 3.05 Remember the structures of the integumentary system

  7. Structures of the integumentary system Subcutaneous layer • Hypodermal • Lies under the dermis • Sometimes called superficial fascia • Consists of loose connective tissue • Contains one-half of the body’s stored adipose tissue epidermis, dermis subcutaneous 3.05 Remember the structures of the integumentary system

  8. Structures of the integumentary system With age, the subcutaneous layer begins to disappear; this causes the skin to sag and wrinkle. epidermis, dermis subcutaneous 3.05 Remember the structures of the integumentary system

  9. Structures of the integumentary system Appendages • Hair • Nails • Glands • Sweat glands • Sebaceous glands epidermis, dermis subcutaneous 3.05 Remember the structures of the integumentary system

  10. Structures of the integumentary system Hair • Cortex and medulla • Root and shaft • Hair follicle • Papilla • Arrector pili muscle Beards are the fastest growing hairs. Nearly 30 feet in a lifetime! 3.05 Remember the structures of the integumentary system

  11. Structures of the integumentary system Nails • Made of keratin • Originate from the nail root Did you know???? In Egypt, the status of women were established by the color of their nail… red being the highest. 3.05 Remember the structures of the integumentary system

  12. Structures of the integumentary system Sudoriferous glands • Sweat glands • Present in large numbers under arms, palms of hands, and soles of feet 3.05 Remember the structures of the integumentary system

  13. Structures of the integumentary system Sebaceous glands • microscopic glands • located adjacent to a hair follicle 3.05 Remember the structures of the integumentary system

  14. Structures of the integumentary system • Microscopic view of the skin 3.05 Remember the structures of the integumentary system

  15. Essential Questions What are the structures of the integumentary system? 3.05 Remember the structures of the integumentary system

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