adrenocorticotropic hormone (ACTH)

the hormone of the anterior lobe of the hypophysis which governs the nutrition and growth of the adrenal cortex, stimulates it to functional activity, and also possesses extraadrenal adipokinetic activity; it is a polypeptide containing 39 amino acids, but exact structure varies from one species to another; adrenocorticotropin, adrenotropic hormone, adrenotropin, corticotropic hormone, corticotropin(1).