Hormones are chemical messengers produced and released by endocrine glands directly into the bloodstream, allowing them to travel to specific target cells throughout the body. These signaling molecules function to regulate various physiological processes, coordinating functions far from their site of origin and maintaining internal systemic balance, known as homeostasis. Their effects are typically mediated by binding to specific receptor proteins on the surface or within the target cell, initiating a cascade of biochemical responses. By controlling processes such as metabolic rates, growth patterns, and the timely response to environmental changes, hormones are critical components of the body’s communication network, ensuring the precise timing and coordination required for life functions.