Which system primarily deals with hormonal changes in the body?

The endocrine system is chiefly responsible for managing hormonal changes within the body. This system comprises a network of glands that release hormones directly into the bloodstream, regulating various physiological functions, including metabolism, growth and development, tissue function, and mood. Hormones act as chemical messengers, influencing many aspects of bodily functions and helping to maintain homeostasis.

In contrast, while the nervous system plays a role in signaling and regulating bodily functions through electrical impulses, it does not primarily manage hormonal control. The skeletal system is involved in structural support and movement, and the reproductive system primarily focuses on the production of gametes and hormones associated with reproduction but does not encompass the broader range of hormonal changes managed by the endocrine system. Therefore, the correct identification of the endocrine system highlights its pivotal role in hormonal regulation throughout the body.