ch18 - Chapter 18 THE ENDOCRINE SYSTEM Chapter Synopsis The...

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Chapter 18 THE ENDOCRINE SYSTEM Chapter Synopsis The chapter begins with a comparison of the nervous and endocrine systems and their roles in homeostasis. A clear distinction is made between endocrine glands and exocrine glands, and hormones are defined, both functionally and chemically. The physiology of hormonal action is described in detail as is the control of hormonal secretions. Students are introduced to the principal components of the endocrine system in terms of location, structure, hormones secreted, physiological effects, and disorders that result from abnormal secretion levels. Emphasis throughout is placed on the regulation of hormone secretions by negative feedback system. The activities of endocrine tissues other than those most commonly recognized are considered. There are sections on eicosanoids and growth factors, followed by a detailed discussion of the general adaptation syndrome, the stages of the stress response, and the relationship of stress to disease. The chapter ends with discussions of the development of the endocrine system and the effects of aging on the endocrine system. Pituitary, hypothalamic, thyroid, parathyroid, adrenal, and pancreatic disorders are included as homeostatic disorders. Clinical applications include blocking hormone receptors, cholera toxins and G-proteins, diabetogenic effect of human growth hormone, administering hormones, oxytocin and childbirth, and non- steroidal anti-inflammatory drugs. The chapter concludes with Focus on Homeostasis: The Endocrine System.
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Chapter Outline and Objectives COMPARISON of the CONTROL by the NERVOUS and ENDOCRINE SYSTEM 1. Compare and contrast the roles of the nervous and endocrine systems in homeostasis. ENDOCRINE GLANDS
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ch18 - Chapter 18 THE ENDOCRINE SYSTEM Chapter Synopsis The...

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