The endocrine system is made up
of the endocrine glands that secrete hormones. Although there are eight major
endocrine glands scattered throughout the body, they are still considered to be
one system because they have similar functions, similar mechanisms of
influence, and many important interrelationships.
Some glands also have
non-endocrine regions that have functions other than hormone secretion. For
example, the pancreas has a major exocrine portion that secretes digestive
enzymes and an endocrine portion that secretes hormones. The ovaries and testes
secrete hormones and also produce the ova and sperm. Some organs, such as the
stomach, intestines, and heart, produce hormones, but their primary function is
not hormone secretion.
GLAND
|
HORMONE(S)
|
Adrenals
|
Cortisol
|
Aldosterone
|
|
DHEA
(Dehydroepiandrosterone)
|
|
Adrenals/ovaries
(women)
|
testosterone
|
estrogens - E1
(estrone), E2 (estradiol), E3 (estriol)
|
|
Adrenals/testes (men)
|
testosterone
|
estrogens
|
|
Pancreas
|
insulin
|
glucagon
|
|
GLP-1
|
|
Thyroid
|
T4 (thyroxine), T3
(triiodothyronine)
|
Pituitary
|
GH (growth hormone)
|
ACTH
(adrenocorticotrophic hormone)
|
|
prolactin
|
|
TSH (thyroid
stimulating hormone)
|
|
LH (luteinizing
hormone)
FSH (follicle
stimulating hormone)
|
|
Parathyroids
|
PTH (parathyroid
hormone)
|
Kidneys
|
Vitamin D
|
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