Hypothalamus-Pituitary Axis — Topic Test
7 questions · exam mode (answers revealed at the end). 18 min suggested.
A 30-year-old woman in the late follicular phase shows a sharp surge of luteinising hormone. At this point in the cycle, oestrogen exerts which effect on the hypothalamic-pituitary axis that is unusual compared with most of the cycle?
APositive feedback augmenting gonadotropin release
BInhibition of pituitary responsiveness to GnRH
CNegative feedback suppressing GnRH pulse frequency
DStimulation of inhibin to block FSH only