part of start stage end stage pars anterior portion of tissue proximal pars anterior 2011-04-13T02:37:52Z Ceri proximal pars distalis zebrafish_anatomy Caudal portion of pars anterior of the adenohypophysis where somatotropes, thyrotropes and gonadotropes are localized. The proximal pars anterior has functional homology to the mammalian pars tuberalis, secreting the same hormones. ZFA:0005581 unknown hatching:long-pec