Labels:text | screenshot | black | black and white OCR: pituitary gland LH and FSH are released fro due to episodic H. The amplitude in episodic pulses throughou stimulation by hypothalamic is quite small of the pulses in normal prep e assays. At the and only detectable by ultrase d then the time of puberty, the amplitu ng to an overall FSH is secreted secretory frequency, increase rise in LH and FSH concentra s at all stages of in greater amounts than LH greater amounts uberty than development, but LH is secre in boys and girls after the on before the onset of puberty.