Question

antidiuretic hormone (adh) is produced by the pituitary gland when the brain detects lower than optimum levels of water in the body. in the kidneys, adh promotes the uptake of water, creating more concentrated urine. adh travels from the pituitary gland to the kidney through the _______ system.

○ endocrine

○ circulatory

○ nervous

○ digestive

Explanation:

ADH is a hormone released by the pituitary gland. Hormones travel through the bloodstream (circulatory system) to reach target organs like the kidneys. The endocrine system refers to the glands that secrete hormones, not the transport pathway. The nervous system uses electrical signals, and the digestive system processes food—neither is involved in hormone transport here.

Answer:

B. circulatory