2.Regulation1) GHRH/GHIH-GH sequence2) physiological factors blood GS (starvation)stressful conditionsleep, exericise ,sex hormoneshoroH3. Abnormal secretion dwarfism -→ ↓ GHin childrengigantism → ↑ GH in childrenacromegaly→ ↑ GH in adult
Prolactin1.Functionspromote breast development during pregnancystimulate milk secretion during breast feeding2.Regulation: PRHPIH3.Abnormal secretion: hyperprolactinaemia