organization of the body

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  1. necessary life functions
    maintaining boundaries, movement, responsiveness, digestion, metabolism, excretion, reproduction, growth
  2. survival needs
    nutrients, oxygen, water, atmospheric pressure
  3. homeostasis
    • maintaining stable internal conditions despite outside changes.¬†
    • dynamic state
    • occurs when the body's needs are met and functioning smoothly
  4. variable
    • factor or event being regulated¬†
    • ex blood sugar
  5. negative feedback
    • most homeostatic control mechanisms¬†
    • cause the variable to change in a direction opposite to the original change
  6. areas which are controlled via negative feedback
    hate rate, blood pressure, rate and depth of breathing, blood oxygen levels, carbon dioxide levels, minerals
  7. positive feedback
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250842
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organization of the body
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