Another way to send messages around the body, apart from the nerves, is by using the hormones.
HORMONES: CHEMICAL MESSENGERS THAT TRAVEL IN THE BLOOD TO ACTIVATE TARGET CELLS.
Hormones are chemical messengers sent in the blood:
· Hormones are chemicals released directly into the blood.
· They are carried in the blood plasma to other parts of the body, but only effect particular cells, called the target calls, in particular places.
· Hormones control things in organs and cells that need constant adjustment.
· Hormones are produced in various glands.
· They travel through your body at ‘the speed of blood’.