What is the primary function of the endocrine system?

The primary function of the endocrine system is to regulate bodily functions through hormones. This system comprises glands that release hormones directly into the bloodstream, which then travel to various organs and tissues to influence their activities. Hormones are vital chemical messengers that coordinate processes such as growth and development, metabolism, reproduction, and response to stress. This regulatory function is critical for maintaining homeostasis, which is the body's ability to maintain a stable internal environment despite changes in external conditions. Hormonal signaling allows for a complex interplay of biological processes, ensuring that different systems in the body can communicate and respond effectively to internal and external stimuli.