Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference,
Wikipedia articles incorporating text from the 1911 Encyclopædia Britannica
Any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream.
An organ that synthesizes a substance, such as hormones or breast milk, and releases it, often into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland).
A cell, tissue, or organ (such as a gland) that produces a bodily secretion.