The endocrine system releases hormones into the bloodstream, while the exocrine system secretes substances through ducts to body surfaces or cavities.
Exocrine system structures include goblet cells, salivary glands, sweat glands, oil glands, liver, pancreas, and lacrimal glands. These glands secrete substances through ducts to the body's surfaces or cavities. On the other hand, the endocrine system consists of glands like the pituitary, thyroid, pancreas, etc., that release hormones directly into the bloodstream to regulate various bodily functions.
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