Abstract
The physiological mechanisms that are behind recruitment and selection of antral follicles in human ovaries remain incompletely understood. One hypothesis is that the follicle, destined to become dominant in a cohort of growing follicles and which will ovulate at mid-cycle, may contain a greater number of granulosa cells and a higher density of FSH receptors. Thus, the dominant follicle acquires greater responsiveness to FSH in comparison with the remaining preantral follicles that instead undergo atresia.
