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Endocrine Glands
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Description
Exocrine glands secrete their products into ducts. None of these are hormones.

These glands include sudoriferous (sweat) glands, sebaceous (oil) glands, mucous glands, digestive glands and several other throughout the body.
Endocrine glands secrete hormones. They do not have ducts and secrete their hormones directly into the interstitial fluid that surrounds them.




The hormones diffuse into the blood stream through capillaries and are carried to target cells throughout the body.

Endocrine glands include the pituitary, thyroid, parathyroid, adrenal and pineal glands.

Certain organs and tissues that are not part of the endocrine system also secrete hormones. These include the hypothalamus, thymus, pancreas, ovaries, testes, kidneys, stomach, liver, small intestine, skin, heart, adipose tissue and placenta.

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