A: Primary capillary bed is present in the median eminence and serves to pick the neurohormones from superior hypophysial arteries. B: The secondary capillary bed is present in pars distalis and serves to release the regulatory hormones of hypothalamus into pituitary. Solution A: Primary capillary bed is present in the median eminence and serves to pick the neurohormones from superior hypophysial arteries. B: The secondary capillary bed is present in pars distalis and serves to release the regulatory hormones of hypothalamus into pituitary..