Hormonal systems are networks in the body that use hormones to regulate various functions. Hormones are chemical messengers produced by glands such as the pituitary gland, thyroid, and adrenal glands. They travel through the bloodstream to target organs, influencing processes like growth, metabolism, and mood. These systems maintain balance, known as homeostasis, by responding to changes in the body. For example, when blood sugar levels rise, the pancreas releases insulin to help cells absorb glucose. This intricate communication ensures that the body functions properly and adapts to different conditions.