The development of primordial follicles into primary follicles... Occurs in the fetus and during childhood. is called "initial recruitment". is independent of gonadotropins (eg: FSH) Considering cyclic recruitment on a ~monthly basis: Tertiary follicles grow in response to FSH. Typically, one large Graafian follicle develops in each ovary. multiple Graafian follicles are always generated. Typically, one large Graafian follicle develops in a single ovary. Kisspeptin: Stimulates (excites) neurons that release GnRH in the hypothalamus. Has it's release increased by estrogen. Inhibits neurons that release GnRH in the hypothalamus. Has it's release reduced by estrogen. During the luteal phase: Progesterone levels are (mostly) high. LH levels are high. estradiol levels are high FSH levels are high.