FEEDBACK CONTROL and the INTEGUMENTARY SYSTEM

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FEEDBACK CONTROL and the INTEGUMENTARY SYSTEM
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INTEGUMENTARY SYSTEM pp 924-926

• Barrier against mechanical and chemical injury
• Protection of microbial invasion
• Insulation against heat loss
• Cooling
• Sensory
• Vitamin (D) synthesis

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FEEDBACK MECHANISMS pp 1041-1042

• Last step of the series controls the first
• Negative feedback the product stops production
  of the initial stimulating substance
• EX. Thermoregulation (sweating and shivering)
  and glucose regulation

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POSITIVE FEEDBACK

• The product stimulates production of the initial
  stimulating substance (i.e. contractions during
  labor)

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