pars tuberalis pars tuberalis the pars tuberalis is part of the anterior lobe of the pituitary gland, and wraps the pituitary stalk in a highly vascularized sheath. pars tuberalisidentifiersneurolex idbirnlex_912ta98a11.1.00.003ta23856fma74631anatomical terms of neuroanatomy pars tuberalispituitary gland. (most of the orange region is "pars distalis", but the part at the top is "pars tuberalis".)detailsidentifierslatinpars tuberalis adenohypophyseosneurolex idbirnlex_912ta98a11.1.00.003ta23856fma74631anatomical terminology histology principal cells of the pars tuberalis are low columnar in form, with the cytoplasm containing numerous lipid droplets, glycogen granules, and occasional colloid droplets. a sparse population of functional gonadotrophs are present (indicated by immunoreactivity for acth, fsh, and lh).