While often overshadowed by the brain and nerves, the endocrine system is also involved in the information business. Hormones carry vital messages with far-reaching consequences. They regulate body processes at every level, from a single cell's energy uptake to the overall rate of growth and development. Hormones are chemical messengers in the body that are produced by 12 different Endocrine glands. Because these glands lack ducts, their hormones...