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Use the pull down menus to insert the best terminology that makes the following story true: Let’s walk our way through the Menstrual Cycle, shall we?  The first day of the menstrual cycle is identified by the start of [blank1].  As this event occurs, a pulse of gonadotropin-releasing hormone (GnRH) will stimulate the release of [blank2] from the anterior pituitary gland. That specific hormone will stimulate the development of one dominant [blank3] in the ovaries. Over the next few days, that group of cells in the ovary will secrete more and more [blank4] through a positive feedback mechanism, as well as [blank5] to suppress any additional oocytes from developing during this cycle.  At about Day 7 of the menstrual cycle, the elevated levels of [blank6] will stimulate the uterus to enter its [blank7] phase, where the uterine lining begins to thicken again.  At approximately Day 14 of the menstrual cycle, a second pulse of GnRH cues a surge of [blank8] from the anterior pituitary gland. That hormone directly cues the production of enzymes that cause [blank9], which is the release of the mature egg cell from the ovary into the oviduct.  A group of cells that helped the egg cell mature will remain in the ovary and transform into a new structure called the [blank10]. That new structure begins releasing the hormone [blank11] at high levels, which cues the uterus to enter its [blank12] phase. During that time, the uterine lining reaches its maximum thickness and becomes highly vascularized, which makes it an ideal location for possible implantation.