The endocrine system is a system of glands throughout the body that release hormones controlling:
- development and growth
- energy regulation (storage & mobilization)
- internal homeostasis (fluids, ions)
- reproduction (sex, pregnancy, lactation)
The hormones are biologically active proteins and glycoproteins. Each of the different hormone groups affect different aspects of these physiological processes. In addition, no hormone acts alone because there are different types of feedback control.
