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During the secretory phase of the menstrual cycle ________. progesterone levels are at their highest the Graafian follicle forms LH reaches its highest levels estrogen reaches its highest levels

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Answer:

progesterone levels are at their highest

Explanation:

Durign the secretory phase, or luteal phase of the menstrual cycle, which happens from the 14th day of the cycle to the 28th in the regular cases, what happens is that progesterone levels are at their highest because progesteron prepares the body to possible ovum fertilization and implantation, as it reaches the end of the cycle and if there hasn´t happend a fertilization, progesteron levels drastically decrease.