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Homeostasis & the Integumentary System

Homeostasis & the Integumentary System. How does the skin interact with other systems to maintain homeostasis throughout the body?. Review: Functions of the Skin. Protects against injury, infection, & UV radiation Keeps moisture in Regulates body temperature Senses stimuli Stores fat.

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Homeostasis & the Integumentary System

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  1. Homeostasis&the Integumentary System How does the skin interact with other systems to maintain homeostasis throughout the body?

  2. Review: Functions of the Skin • Protects against injury, infection, & UV radiation • Keeps moisture in • Regulates body temperature • Senses stimuli • Stores fat

  3. Homeostatic Relationshipswith Other Body Systems • The integumentary system plays a major role in maintaining homeostasis in the body! Overall… • Skin & hair are barriers that protect internal organs and keep fluids in • Sweat glands and blood vessels help regulate body temperature

  4. The Skin and the…Digestive System • Skin protects digestive organs • Skin produces vitamin D, needed for calcium absorption • Digestive system provides nutrients to skin cells (carried through the body by the blood)

  5. The Skin and the…Muscular System • Skin protects muscles • Sweat glands cool the body down when active muscles produce heat • Muscle activity generates heat, which increases blood flow to the skin and activates sweat glands

  6. The Skin and the…Skeletal System • Skin protects bones • Skin produces vitamin D, needed for strong bones • Skeletal system provides support for the skin

  7. The Skin and the…Endocrine System • Skin protects endocrine organs • Endocrine system produces hormones that affect sebaceous glands, skin, hair • Androgens activate sebaceous glands, regulate hair growth • Estrogen maintains skin hydration

  8. The Skin and the…Nervous System • Skin protects nerves • Sensory receptors in skin sense information • Nerves control blood flow, sweat glands, arrectorpili muscles

  9. The Skin and the…Lymphatic/Immune System • Skin protects lymphatic organs • Skin barrier prevents pathogens from entering body • Immune cells in skin protect skin • Lymphatic system collects excess fluid, which prevents edema (swelling of the skin and other tissues)

  10. The Skin and the…Cardiovascular System • Skin protects blood vessels • Capillaries in dermis serve as blood reservoir, and control conserving/releasing heat • Cardiovascular system brings nutrients to skin and removes wastes

  11. The Skin and the…Respiratory System • Skin protects respiratory organs • Respiratory system provides oxygen to skin cells (carried through the body by the blood) • Also removes carbon dioxide from skin cells

  12. The Skin and the…Urinary/Excretory System • Skin protects urinary organs • Skin excretes some salt and wastes through sweat • Kidneys activate vitamin D produced by skin • Urinary system removes nitrogenous wastes from skin cells

  13. The Skin and the…Reproductive System • Skin protects reproductive organs • Mammary glands produce milk • Mammary glands are highly modified sweat glands! • Skin stretches during pregnancy • Hormonal changes during pregnancy may cause changes in skin pigmentation

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