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Integumentary System Outline

Integumentary System Outline. Health Occ. Integumentary System. Composed of Skin Accessory structures Accessory structures include hair Nails Glands nerves. Integumentary System. Main Functions Cover and protect the body Help regulate the body’s temperature

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Integumentary System Outline

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  1. Integumentary System Outline Health Occ

  2. Integumentary System • Composed of • Skin • Accessory structures • Accessory structures include • hair • Nails • Glands • nerves

  3. Integumentary System • Main Functions • Cover and protect the body • Help regulate the body’s temperature • Excretes some of the body’s waste materials • Includes sensors for pain and sensation

  4. Skin • Functions • Protects the body from injury • protects the body from the intrusion of harmful microorganisms • Protects the body from the ultraviolet (UV) rays of the sun • helps to maintain proper internal temperature of the body • Serves as a site for excretion of waste through perspiration • serves as an important sensory organ

  5. Skin • Covers • 17 to 20 square feet • Variations of Thickness • 1/50 inch to ¼ inch thick • The skin on the back upper back is 10 times thicker than the skin on the eyelid

  6. Skin • Layers of the skin and what they are composed of • Epidermis • Dermis • Subcutaneous

  7. Epidermis • Outer layer of skin • 2 sub layers: stratum corneum, stratum germinativum • Dead skin cells, melanin, 90% water repellant

  8. Dermis • Makes ridges known as fingerprints • Blood vessels, nerve endings, sebaceous and sweat glands, hair follicles

  9. Subcutaneous • Fatty and fibrous tissue, blood vessels and nerves • Fatty layer protects inner organs and maintains body temp.

  10. Hair • Pilus • Hair • Where you do/don’t have hair • All areas except soles of feet and palms • Visible Portion • shaft

  11. Hair • The root • follicle • Oil glands • Attached to each hair • Melanin • Determines hair color • No melanin = gray hair • Baldness (alopecia) • Heredity, result of disease, injury, or medical treatment

  12. Glands • Three types of glands • Sebaceous • Sudoriferous • ceruminous

  13. Sebaceous • Dermis, base of hair follicles • Secrete sebum • Lubricates, softens, and protects skin from bacteria and fungi

  14. Sudoriferous (sweat glands) • Found almost everywhere • Cools the body • Diaphoresis = sweating

  15. Ceruminous • Found in the auditory canal of ear • Secrete wax • Protects ear from infection

  16. Nails • Function • Protection • Help with grasping objects • Allow us to scratch • Formed from • Hard keratin • Lunula • Crescent shaped white area

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