What are hormones defined as?

Hormones are defined as special chemicals secreted by glands within the body, which is why the selected answer is correct. These biochemical messengers play a crucial role in regulating various physiological processes, including metabolism, growth, reproduction, and mood. Hormones are produced in one part of the body and travel through the bloodstream to influence the function of other organs and tissues, thereby ensuring that bodily functions operate in synchronization with one another.

The other options do not accurately represent what hormones are. While stomach secretions are important for digestion, they do not encompass the broader functions of hormones in the body. Proteins that repair cells do serve a vital function in bodily maintenance and healing but are not categorized as hormones. Lastly, while minerals are essential for various bodily functions and can influence hormone activity, they themselves are not classified as hormones. Understanding the role of hormones is essential for anyone studying esthetics, as they can significantly affect skin health and appearance.