Definition of hormones and determine the function.. Chemical messages are produced from the endocrine glands directly into the blood to speed up or slow down vital activities and increase or decrease the speed of specific cellular processes in the body

* Definition of hormones: are chemical messages produced from the endocrine to the blood directly.
Effect: It affects specific cells and can speed up or slow down vital activities.
* Function: Increase or decrease the speed of specific cellular processes in the body.