Answer: Circulatory system
Explanation:
The endocrine system releases hormones in the the circulatory system of the body. The endocrine system can be defined as the chemical substances that is used to generate various responses of the body.
The endocrine system of the body functions to control the reproductive system of the body, hormones that regulates the functions of the brain et cetera.
The hormones released from the glands are transported via the circulatory system of the body.
