Define hormones and briefly summarize their function. Provide an example to support your answer
What will be an ideal response?
Answer: Hormones are chemical substances or signaling molecules of the endocrine system that regulate the activity of cells. Hormones regulate many physiological processes, such as reproduction, development, growth, metabolism, and behavior. Endocrine tissues produce hormones. Before a substance can be classified as a hormone, it must accomplish four functions: 1) have a signaling function, 2) be transported via the circulatory system, 3) bind to a specific receptor, and 4) exert its effect at low concentrations. One hormone may influence several physiological responses. For example, somatostatin hormones regulate blood glucose and other nutrients, and also affect growth and metabolism. Interaction between hormones plays an important role in physiological regulation. In glucose metabolism, we see that insulin and glucagon both regulate blood glucose levels. Hormone levels in the blood are tightly regulated and the regulation is accomplished via feedback loops.
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