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endocrine system
made up of endocrine gland - secrete hormones
exocrine glands
secrete into duct - carries secretion to body surface
-salivary gland, mucous glands
endocrine glands
secrete hormones into extracellular fluid that make up gland
-secretion passes into capillaries - transported by blood
Hormones
chemical secreted - transported in blood
-maybe be steroid, protein, amine
Function of hormones
change functioning of cells by type, activities or quantities of proteins produced
Action of hormones
-activate certain genes in nucleus
Note 
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