You are presented with the question "Which body system releases chemical messengers that control many body functions?" and the following answer choices: 
- athletes
 - acetic acid
 - sweating
 - Endocrine system
 - heat or cold
 - Electrical energy
 - Veins and arteries.
 - sensory neurons

Now knowing that hormones are chemical messengers that control many body functions and hormones are produced and released by the endocrine system , choose the best answer.


 

    Endocrine system     