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Contents
Hormones
The endocrine system
Endocrine glands
Blood glucose regulation
Summary quiz
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Hormones and the endocrine system
What exactly are hormones?
What effect do hormones have on the body?
To understand hormones you need to know about the
endocrine system and how it works.
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The endocrine system
The endocrine system co-ordinates the
body's organs so they work together.
The endocrine system is based on the
production of chemical messengers
called hormones.
Hormones are produced by glands
(endocrine glands) in different parts of
the body. These chemical messengers
produced in very small quantities and
transported in the blood.
Hormones control body processes that require several
organs of the body to interact for a combined effect.
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What do hormones do?
Hormones travel slower than nervous
impulses but cause longer lasting effects.
They are delivered to all parts of the
body but can have local effects.
Hormones are used to stabilise the
body's internal environment through
homeostasis and also co-ordinate
longer term processes such as growth
and sexual development.
Over or under activity of some endocrine glands
can cause functional disorders such as diabetes.
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Which body system?
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