A substance produced in one part of the body that causes action in another.
The definition of hormone:
Substances produced in one part of the body that cause action in another.
Hormones are only similar by definition. It’s a functional definition, not a reflection of anything about them physically or chemically. They are very different from one-another.
Example Hormones
- Insulin is a hormone made in the pancreases that causes your blood sugar to change
- Testosterone is the hormone of desire, amongst other things
- Noradrenaline and Adrenaline are hormones that do basically the same thing as each other
- Dopamine is a hormone that causes motivation