Endocrine gland

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Endocrine gland

organs or gland that secrete regulatory substances directly into the circulation and not through a duct.

Examples are pituitary, thyroid, parathyroid, adrenal glands, ovary and testis, placenta and beta cells of pancreas. Any of the glands of the endocrine system that secrete hormones directly into the bloodstream.Tissues specialised in the production of hormones which can be secreted into the bloodstream.