Which system affects growth, development, sexual functions, and the health of the entire body?

The endocrine system is crucial in regulating various bodily functions, including growth, development, sexual functions, and overall health. It accomplishes this through the release of hormones, which are chemical messengers that travel through the bloodstream to target organs and tissues. These hormones influence a wide range of processes, such as metabolism, mood, and reproduction.

For instance, during puberty, hormones produced by the endocrine system trigger physical changes and sexual maturation. Similarly, growth hormones play a significant role in determining height and body composition during childhood and adolescence.

Furthermore, the endocrine system's hormones maintain homeostasis, ensuring that the body operates efficiently and responds appropriately to stress and environmental changes. This comprehensive control over numerous physiological aspects makes the endocrine system fundamental to the health and functioning of the entire body.