Online Encyclopedia

DUCTLESS GLANDS

Online Encyclopedia
Originally appearing in Volume V08, Page 633 of the 1911 Encyclopedia Britannica.
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DUCTLESS GLANDS, in anatomy. A certain number of glands in the body, often of great physiological importance, have no ducts (Lat. due/us, from ducere, to lead, i.e. vessels, tubes or canals for conveying away fluid or other substance); and their products, known as internal secretions, are at once carried away by the veins or lymphatics which drain them. Among these structures are the spleen, the adrenals, the thyroid gland, the parathyroids, the thymus and the carotid and coccygeal bodies. In addition to these the lymphatic glands are described in the article on the lymphatic system (q.v.), and the pineal and pituitary bodies in the article on the brain (q.v.).
End of Article: DUCTLESS GLANDS
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