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  • 1. Ch. 7 Sec. 1 The Endocrine System
  • 2. endocrine system controls many of body’s daily activities & long term changes made of endocrine glands produce & release chemicals directly  bloodstream
  • 3. hormones
    • produced by endocrine gland
    • “ chemical messengers”
    • interact w/ certain target cells
  • 4. hypothalamus
    • links nervous & endocrine system
    • controls hormone release
    • sleep, hunger, maintains homeostasis
    • controls pituitary gland
  • 5. pituitary gland
    • regulates body processes (growth, blood pressure, water balance)
    • responds to nerve impulses or hormone signals from hypothalamus
  • 6.  
  • 7.  
  • 8. negative feedback
    • helps maintain homeostasis
    • when amount of hormone reaches right level  signals gland to stop making that hormone
    http://www.phschool.com/atschool/phsciexp/active_art/negative_feedback/index.html
  • 9.