Explanation In a negative feedback system, the response of an integrator (control system) is negative (opposite) to the output of a sensor that detects a change. This system maintains homeostasis. Typically, the secretion of a hormone is regulated by negative feedback systems. In response to a steady state, a hormone is released and triggers a response that counteracts the changed condition to restore homeostasis. For example, the hypothalamus is stimulated by the low plasma cortisol (hydrocortisone) levels, fear, emotional or physical stress, and pain or cold to secrete corticotrophin-releasing hormone (CRH). CRH stimulates the adrenocorticotropic hormone (ACTH) to produce cortisol. This cortisol is then released into the plasma. When the concentration of cortisol is increased in the plasma, cortisol produces a negative feedback control on the hypothalamus and the anterior pituitary. As a result, the secretion of CRH and ACTH is reduced. Pictorial representation: Fig...

10th Edition

ISBN: 9781285423586

Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher: Cengage Learning

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Question

Chapter 49.1, Problem 2LO

Summary Introduction

To summarize: The regulation of endocrine action by negative feedback systems.

Introduction: The endocrine system is the chemical signaling system that uses blood vessels as information channels. The endocrine glands are ductless organs located within the organ systems and contain groups of endocrine cells that secrete their hormones directly into their surroundings.

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Chapter 49 Solutions

Biology (MindTap Course List)

Ch. 49.1 - Prob. 1LO Ch. 49.1 - Prob. 2LO Ch. 49.1 - Identify four main chemical groups to which...Ch. 49.1 - Prob. 1C Ch. 49.1 - Prob. 2C Ch. 49.1 - Prob. 3C Ch. 49.1 - Prob. 4C Ch. 49.2 - Compare four types of endocrine signaling.Ch. 49.2 - Prob. 1C Ch. 49.2 - Prob. 2C

Ch. 49.2 - Prob. 3C Ch. 49.3 - Compare the mechanism of action of small,...Ch. 49.3 - Prob. 1C Ch. 49.3 - Prob. 2C Ch. 49.3 - What is the mechanism of action of a hormone that...Ch. 49.4 - Prob. 6LO Ch. 49.4 - Prob. 1C Ch. 49.4 - Prob. 2C Ch. 49.5 - Identify the classical vertebrate endocrine glands...Ch. 49.5 - Prob. 8LO Ch. 49.5 - Describe the actions of the thyroid and...Ch. 49.5 - Contrast the actions of insulin and glucagon, and...Ch. 49.5 - Describe the actions and regulation of the adrenal...Ch. 49.5 - Prob. 1C Ch. 49.5 - Prob. 2C Ch. 49.5 - Prob. 3C Ch. 49.5 - Prob. 4C Ch. 49.5 - Prob. 5C Ch. 49 - A cell secretes a product that diffuses through...Ch. 49 - Prob. 2TYU Ch. 49 - Prob. 3TYU Ch. 49 - Prob. 4TYU Ch. 49 - Prob. 5TYU Ch. 49 - Prob. 6TYU Ch. 49 - Prob. 7TYU Ch. 49 - Prob. 8TYU Ch. 49 - Prob. 9TYU Ch. 49 - Prob. 10TYU Ch. 49 - Prob. 11TYU Ch. 49 - Prob. 12TYU Ch. 49 - Prob. 13TYU Ch. 49 - Prob. 14TYU

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Solution Summary: The author explains the regulation of endocrine action by negative feedback systems. The hypothalamus is stimulated by low plasma cortisol levels, fear, emotional or physical stress, and pain or cold to secrete cor

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