Control of hormone production

Control of hormone production - hormones is discontinued...

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Control of hormone  production Endocrine glands release hormones in  response to one (or more) of the  following stimuli: Hormones from other  endocrine glands Chemical characteristics of  the blood (other than hormones) Neural stimulation Most hormone production is regulated  by a  negative feedback  system. The  nervous system and certain endocrine 
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tissues monitor various internal  conditions of the body. If action is  necessary to maintain homeostasis,  hormones are released, either directly  by an endocrine gland or indirectly via  the action of the hypothalamus of the  brain, which stimulates other endocrine  glands to release hormones. The  hormones activate target cells, which  initiate physiological changes that  adjust body conditions. When normal  conditions have been restored, the  corrective action (the production of 
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Unformatted text preview: hormones) is discontinued. Thus, in negative feedback, when the original (abnormal) condition has been repaired, or negated, corrective actions decrease or are discontinued. For example, the amount of glucose in the blood regulates the secretion of insulin and glucagons through negative feedback. The production of some hormones is regulated by positive feedback. In such a system, hormones cause a condition to intensify (rather than decrease). As the condition intensifies, hormone production increases. Such positive feedback is uncommon but does occur during childbirth (hormone levels build with increasingly intense labor contractions) and lactation (where hormone levels increase in response to nursing, which causes milk production to increase)....
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Control of hormone production - hormones is discontinued...

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