Source:http://linkedlifedata.com/resource/umls/id/C0229548
NCI: A tubular outgrowth of ectoderm from the stomodeum of the embryo; it grows dorsad toward the infundibular process of the diencephalon, around which it forms a cup-like mass, giving rise to the pars distalis and pars juxtaneuralis of the hypophysis. (On-line Medical Dictionary)