"Adrenal" Quotes from Famous Books
... secretion formed by a gland, to be poured into the blood or lymph system, while an external secretion is poured out through ducts to the exterior. The thyroid and adrenal glands form internal secretions only, which secretions, poured into the blood and lymph, profoundly affect the nutrition of the body. The salivary glands and gastric glands form external secretions only; which, when poured upon the food, digest it. The liver, pancreas ... — The Biology, Physiology and Sociology of Reproduction - Also Sexual Hygiene with Special Reference to the Male • Winfield S. Hall |