supraoptic nucleus TA of hypothalamus

su·pra·op·tic nu·cle·us [TA] of hy·po·thal·a·mus

a large-celled neurosecretory nucleus in the hypothalamus, located over the lateral border of the optic tract, from which the supraopticohypophysial tract arises; its neurons produce and transport vasopressin released into the general circulation from the axon terminals in the supraopticohypophysial tract. This nucleus can be divided into a pars dorsolateralis [TA], pars dorsomedialis [TA], and pars ventromedialis [TA].