What is the primary role of hormones in the endocrine system?

The primary role of hormones in the endocrine system is to regulate metabolism, which encompasses a range of processes including how the body utilizes energy, converts food into energy, and manages physiological activities. Hormones like insulin, glucagon, thyroid hormones, and others play crucial roles in controlling metabolic pathways, influencing how substances such as carbohydrates, fats, and proteins are processed within the body.

Moreover, hormones act as chemical messengers that have widespread effects on various tissues and organs, enabling them to coordinate and maintain homeostasis within the body. By regulating metabolism, hormones ensure that the energy needs of the body are met and that various bodily functions are performed efficiently. This regulatory function is vital for growth, development, reproduction, and overall health, impacting both short-term and long-term biological processes.

While the other options may relate to various biological functions, they do not capture the comprehensive regulatory function of hormones within the metabolic context, which is central to the endocrine system's role.