What are hormones?
Chemical messengers which travel in the blood to activate target cells
How are hormones carried?
In the blood plasma to other parts of the body but only affect particular cells
What do hormones control?
Things in organs and cells that need constant adjustment
How are hormones produced?
They are produced in and secreted by various glands
What is the pituitary gland?
In the brain
Produces FSH and LH
What has a very fact action?
Nerves
What act for a short time?
Nerves
What act on a precise area?
Nerves
What take slower action?
Hormones
What act for a long time?
Hormones
What act in a more general way?
Hormones