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The endocrine system includes all of the glands of the body and the hormones produced by those glands. The glands are controlled directly by stimulation from the nervous system as well as by chemical receptors in the blood and hormones produced by other glands. By regulating the functions of organs in the body, these glands help to maintain the bodyâs homeostasis.
The endocrine system is the system of glands, each of which secretes a type of hormone into the bloodstream to regulate the body. While powerful, the endocrine organs are relatively small. Hormones are chemical messengers that have many different functions. In the bloodstream, the hormones travel throughout the body. Their effects vary widely, and all are important for life. Some familiar examples of hormones include insulin, thyroid hormone, and cortisol. These hormones are important in the development of diabetes, hypo-and hyperthyroidism, and Cushingâs disease, respectively. Human endocrine glands are essentially identical to dog and cat endocrine glands, both in structure and function.