Final answer:
ACTH stimulates the adrenal cortex to secrete corticosteroid hormones such as cortisol to regulate various physiological processes and responses.
Step-by-step explanation:
Adrenocorticotropic hormone (ACTH), also known as corticotropin, stimulates the adrenal cortex to secrete corticosteroid hormones such as cortisol. ACTH is released by the anterior pituitary gland in response to corticotropin-releasing hormone (CRH) from the hypothalamus. The target and function of ACTH is to regulate long-term stress response, blood pressure and volume, nutrient uptake and storage, fluid and electrolyte balance, and inflammation.