Source:http://linkedlifedata.com/resource/umls/id/C0026132
MSH: Expulsion of milk from the mammary alveolar lumen, which is surrounded by a layer of milk-secreting EPITHELIAL CELLS and a network of myoepithelial cells. Contraction of the myoepithelial cells is regulated by neuroendocrine signals.,GO: An automatic response to suckling, beginning with a nerve impulse from a receptor in the mammary gland and ending with the ejection of milk from the gland. Signaling never reaches a level of consciousness. [GOC:dph, GOC:st]