Biology - Hormones

Hormones

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’.

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