Now, neurotransmitters are very specific to the type of cell that they bind to but hormones are not that specific. That means they can bind to many different types of cells and some of these cells can be affected in an activating manner whilst other cells can basically be inhibited by that same hormone. So unlike neurotransmitters which basically acts over very short distances and act very quickly and are short lived our hormones travel over very long distances. They act relatively slowly so over hours or days or even longer and they basically can infect the organism over long term. Now, the endocrine system consists of special types of glands that produce our hormones. These are known as endocrine glands.