PAYET / SCIENCE PHOTO LIBRARY PAYET / SCIENCE PHOTO LIBRARY
Ovarian cycle : follicular phase. Under the effect of the hormones LH and FSH, produced by the hypophyseal gland located under the brain, certain ovarian follicles develop (evolution into a primordial follicle, primary, secondary and tertiary). One of the mature cavitary follicles (Graafian follicle) will jut out at the surface of the ovary and release the ovum, captured by the infundibulum of the fallopian tube. It is ovulation. See. Image 8467406 for a zoom. This illustration is part of a series concerning the menstrual cycle. See.
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