Chapter 34.pe - Chapter34 IntroductiontotheEndocrineSystem

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Chapter 34 Introduction to the Endocrine System
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Complementary Actions of the  Nervous System and Endocrine System They work together to maintain internal homeostasis  They integrate the body’s response to the external  environment
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Characteristics of All Hormones Produced in very small amounts Secreted directly into the bloodstream Travel through the blood to specific receptor sites  Act to increase or decrease the normal metabolic  processes of cells when they react with receptor sites Are immediately broken down
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Endocrine System
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Where Hormones Are Produced Pituitary gland Ovaries Testes Adrenal gland Thyroid gland Parathyroid  gland Pancreas
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Hormone Actions in the Body Hormones work in 2 different ways in the body: React with a specific receptor site on a cell membrane and  cause the activation of cAMP that leads to a change in cell  activity. They analyze input from the periphery and the CNS. 
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Chapter 34.pe - Chapter34 IntroductiontotheEndocrineSystem

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