You may never have thought of it this way, but when you send a text message to two friends to meet you at the dining hall at six, you’re sending digital signals that (you hope) will affect their behavior-even though they are some distance away. Image Credit: photographer Sumit Bose, Wikimedia Commons, photo title Yoga, license CC-BY Hormones of the endocrine system coordinate and control growth, metabolism, temperature regulation, the stress response, reproduction, and many other functions. The endocrine system is responsible for regulating many of the variables controlling the body’s internal environment. Figure 17.1 Endocrine System and Balance.
