endo
within, inside
exo/ecto
outside
hormone (=excite)
a chemical messenger
hypo
under, below, deficient
hyper
over, above, excessive
two types of glands?
exocrine glands and endocrine glands
what do exocrine glands do?
secrete substances that enter ducts
what do endocrine glands do?
stay in the body. Secretions enter interstitial fluid and then diffuse into the bloodsteam