Definition: Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.

Alright class, settle down, let’s take a peek, At this word “hormone,” what does it truly speak? The dictionary gives us a helpful line, "A substance produced, wonderfully divine!" It tells you, listen close and pay attention near, That hormones are made, banishing all fear. One part of your body, let’s say for example true, Starts making a chemical, just for me and you! This chemical then travels, swift and fleet, Through the bloodstream, a wonderfully sweet treat. It arrives at another place, far away, To change how it functions – that's what they do each day! Think of it like this: a signal sent with grace, A physiological activity in its place. So, essentially, hormones are messengers bright, Guiding our bodies, morning, noon, and night! Do you have any questions about this little rhyme? Let's discuss!