which of these structures relies on circulartory system to transport the chemical compuonds that it makes to other body structures

"The pituitary system" relies on circulatory system to transport the chemical compounds that it makes to other body structures

Explanation:

The pituitary gland plays a very vital role as it transfers the the messages from the brain and also utilizes the message for generation of hormones which affects different parts of the body which also includes the stimulating of all other hormone which are produced by their own hormone. The pituitary gland also regulates the secretion of the adrenal gland called cortisol as well as the thyroid gland secretion called thyroxine.