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| Hormones. Hormones are chemicals that are released into the blood , they are carried in the plasma to varying parts of the body, where they act on target cells. These are particular cells in particular places that need constant adjustment. | Hormones are produced in glands, they travel slowly through the body and tend to have a long lasting effect. I.E. Adrenal glands, at the top of the kidney produce adrenaline. |
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Hormones and nerves do similar things, but there are differences. |
| Nerves: Very Fast. Act for very short time. Act on a very precise area. | Hormones: Slower acting message. Act for a long time. Act in a more general way. |
| If you have a quick response to something, it is probably nervous. Information needs to passed to effectors really quickly , I.E. pain signals, from your finger, telling you its in a flame. | If a response is long lasting it is probably hormonal. when shocked adrenaline is released into the blood stream, causing a fight or flight response, where your body is hyped ready for action. You can tell it's hormonal even though it kicks in pretty quickly, it last a while. |
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