"Ductless" Quotes from Famous Books
 ... origin, it beginning as an ingrowth from the lower section of the pharynx and extending down to the lower part of the neck. It subsequently loses its connection with the pharynx, and in adult life is a bilobed structure on either side of the windpipe. Like the thymus it is a ductless gland, abundantly supplied with blood-vessels, and possesses a vast number of small cavities, lined with cells and containing an insoluble jelly. So far as appears, both these glands are useless, or nearly so, to man; or if the thyroid performs any useful service ...
— Man And His Ancestor - A Study In Evolution • Charles Morris
... different from those of the evolutionist. The former concludes from certain experiments that a given organ of internal secretion has a certain function. The corpora lutea, for example, according to one theory are ductless glands, the function of whose secretion is to establish ova in the uterus and promote their development. Another function suggested for the secretion of the corpora lutea is to prevent further ovulation during pregnancy. The evolutionist, ...
— Hormones and Heredity • J. T. Cunningham
... into the functioning of the ductless glands and their secretions throws a new light on this problem. Not long ago these glands were a complete enigma, owing to the fact that they are not provided with excretory ducts. It has just recently been shown that these organs, such as the thyroid, the pituitary, the suprarenal, the parathyroid ...
— The Pivot of Civilization • Margaret Sanger |
