![]() The endocrine glands and hormone producing diffused tissues/cells located in different parts of our body constitute the endocrine system.The human endocrine system is described here. Invertebrates possess very simple endocrine systems with few hormones whereas a large number of chemicals act as hormones and provide coordination in the vertebrates.Hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amounts.Hormone is a chemical produced by endocrine glands and released into the blood and transported to a distantly located target organ. ![]()
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