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Systemic Signaling Molecules

Meaning

Systemic Signaling Molecules are the diverse and extensive array of chemical messengers, which fundamentally include hormones, cytokines, specialized growth factors, and key metabolites, that circulate broadly throughout the body via the bloodstream to precisely coordinate and regulate the function of distant cells and organs. These essential molecules actively facilitate the intricate, necessary cross-talk between the endocrine, immune, and nervous systems, thereby ensuring a unified and appropriate physiological response to both internal changes and external stimuli. They represent the fundamental chemical language of all inter-organ communication.