Chapter 46 The Endocrine System 2011

Chapter 46 The Endocrine System 2011 - Chapter 46 The...

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Unformatted text preview: Chapter 46 The Endocrine System Learning Objectives 1. Chemical Nature of Hormones and their characteristics 2. Categories of Chemical Signals in Animals 3. What do hormones do? 4. Hormone action at the molecular level 5. Components of the Endocrine System 6. Hormone Signaling Pathways 7. The Hypothalamus and the Pituitary Chapter 46 The Endocrine System 1. Animals generate and receive signals from their bodies to control cellular processes. Chapters 44 and 45 stressed how electrical signals and neurotransmitters in the nervous system bring about control of the animal body. 2. This chapter discusses how chemical signals including neurotransmitters control many of our processes. While the nervous system produces short acting responses measured in seconds or less, many of the chemical signals are much longer acting seconds to years. Hormones are often involved They are defined as chemical signals synthesized by cells in one location which are transported by blood and bring about a change in some distant cells. 3. We will study how hormones play a major role in homeostasis, responses to the environment, and in development. hat is the Chemical Nature of Hormones? 1. Hormones are composed of three classes of Biochemical Compounds....
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Chapter 46 The Endocrine System 2011 - Chapter 46 The...

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