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Paper 2
Homeostasis & Response
Endocrine system (hormones)
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Biology > Paper 2 > Homeostasis & Response > Endocrine system (hormones)
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Endocrine system
The system in the body that is controlled by chemicals called
hormones
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Endocrine system
Consists of a number of
glands
that secrete hormones directly into the
bloodstream
Hormones
are carried in the
bloodstream
and act on specific target organs
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Key endocrine glands
Pancreas
Ovaries
Testes
Thyroid
Adrenal
Pituitary
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Pancreas
Releases hormones involved in controlling
glucose
concentration in the
blood
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Ovaries
and
Testes
Release
hormones
involved in
puberty
and reproduction
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Thyroid gland
Produces hormones involved in
growth
and regulating
basal metabolic rate
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Adrenal glands
Release the hormone
adrenaline
, produced in times of
fear
or stress
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Pituitary gland
Located in the
brain
, releases hormones that act on other
glands
to trigger a range of effects in the body
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The
pituitary
gland is called the "
master
gland"
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