<prompt> Which of these anterior pituitary hormones is under tonic inhibitory control of hypothalamus instead of hypothalamic releasing factors?LHFSHTSHPRL  <response>: Prolactin secretion is under tonic inhibitory control by the hypothalamic secretion of dopamine Prolactin Inhibitory Factor All other hormones of anterior pituitary - FSH, LH, TSH, ACTH, GH are stimulated by releasing factors secreted in hypothalamus. 